Aristotelian Elements of Theatre
Plot is the “first principle,” the most important feature of tragedy. Aristotle defines plot as “the arrangement of the incidents”: i.e., not the story itself but the way the incidents are presented to the audience, the structure of the play. According to Aristotle, tragedies where the outcome depends on a tightly constructed cause-and-effect chain of actions are superior to those that depend primarily on the character and personality of the protagonist. Plots that meet this criterion will have the following qualities . See Freytag's Triangle for a diagram that illustrates Aristotle's ideal plot structure, and for an application of this diagram to Sophocles’ play.
1. The plot must be “a whole,” with a beginning, middle, and end. The beginning, called by modern critics the incentive moment, must start the cause-and-effect chain but not be dependent on anything outside the compass of the play (i.e., its causes are downplayed but its effects are stressed). The middle, or climax, must be caused by earlier incidents and itself cause the incidents that follow it (i.e., its causes and effects are stressed). The end, or resolution, must be caused by the preceding events but not lead to other incidents outside the compass of the play (i.e., its causes are stressed but its effects downplayed); the end should therefore solve or resolve the problem created during the incentive moment . Aristotle calls the cause-and-effect chain leading from the incentive moment to the climax the “tying up” (desis), in modern terminology the complication. He therefore terms the more rapid cause-and-effect chain from the climax to the resolution the “unravelling” (lusis), in modern terminology the dénouement .
2. The plot must be “complete,” having “unity of action.” By this Aristotle means that the plot must be structurally self-contained, with the incidents bound together by internal necessity, each action leading inevitably to the next with no outside intervention, no deus ex machina . According to Aristotle, the worst kinds of plots are “‘episodic,’ in which the episodes or acts succeed one another without probable or necessary sequence”; the only thing that ties together the events in such a plot is the fact that they happen to the same person. Playwrights should exclude coincidences from their plots; if some coincidence is required, it should “have an air of design,” i.e., seem to have a fated connection to the events of the play . Similarly, the poet should exclude the irrational or at least keep it “outside the scope of the tragedy,” i.e., reported rather than dramatized . While the poet cannot change the myths that are the basis of his plots, he “ought to show invention of his own and skillfully handle the traditional materials” to create unity of action in his plot .
3. The plot must be “of a certain magnitude,” both quantitatively (length, complexity) and qualitatively (“seriousness” and universal significance). Aristotle argues that plots should not be too brief; the more incidents and themes that the playwright can bring together in an organic unity, the greater the artistic value and richness of the play. Also, the more universal and significant the meaning of the play, the more the playwright can catch and hold the emotions of the audience, the better the play will be.
4. The plot may be either simple or complex, although complex is better. Simple plots have only a “change of fortune” (catastrophe). Complex plots have both “reversal of intention” (peripeteia) and “recognition” (anagnorisis) connected with the catastrophe. Both peripeteia and anagnorisis turn upon surprise. Aristotle explains that a peripeteia occurs when a character produces an effect opposite to that which he intended to produce, while an anagnorisis “is a change from ignorance to knowledge, producing love or hate between the persons destined for good or bad fortune.” He argues that the best plots combine these two as part of their cause-and-effect chain (i.e., the peripeteia leads directly to theanagnorisis); this in turns creates the catastrophe, leading to the final “scene of suffering” .
Character has the second place in importance. In a perfect tragedy, character will support plot, i.e., personal motivations will be intricately connected parts of the cause-and-effect chain of actions producing pity and fear in the audience. The protagonist should be renowned and prosperous, so his change of fortune can be from good to bad. This change “should come about as the result, not of vice, but of some great error or frailty in a character.” Such a plot is most likely to generate pity and fear in the audience, for “pity is aroused by unmerited misfortune, fear by the misfortune of a man like ourselves.” The term Aristotle uses here, hamartia, often translated “tragic flaw,” has been the subject of much debate. The meaning of the Greek word is closer to “mistake” than to “flaw,” and I believe it is best interpreted in the context of what Aristotle has to say about plot and “the law or probability or necessity.” In the ideal tragedy, claims Aristotle, the protagonist will mistakenly bring about his own downfall—not because he is sinful or morally weak, but because he does not know enough. The role of the hamartiain tragedy comes not from its moral status but from the inevitability of its consequences. Hence the peripeteia is really one or more self-destructive actions taken in blindness, leading to results diametrically opposed to those that were intended (often termed tragic irony), and the anagnorisis is the gaining of the essential knowledge that was previously lacking .
Characters in tragedy should have the following qualities :
1. “good or fine.” Aristotle relates this quality to moral purpose and says it is relative to class: “Even a woman may be good, and also a slave, though the woman may be said to be an inferior being, and the slave quite worthless.”
2. “fitness of character” (true to type); e.g. valor is appropriate for a warrior but not for a woman.
3. “true to life” (realistic)
4. “consistency” (true to themselves). Once a character's personality and motivations are established, these should continue throughout the play.
5. “necessary or probable.” Characters must be logically constructed according to “the law of probability or necessity” that governs the actions of the play.
6. “true to life and yet more beautiful” (idealized, ennobled).
Thought is third in importance, and is found “where something is proved to be or not to be, or a general maxim is enunciated.” Aristotle says little about thought, and most of what he has to say is associated with how speeches should reveal character. However, we may assume that this category would also include what we call the themes of a play.
Diction is fourth, and is “the expression of the meaning in words” which are proper and appropriate to the plot, characters, and end of the tragedy. In this category, Aristotle discusses the stylistic elements of tragedy; he is particularly interested in metaphors: “But the greatest thing by far is to have a command of metaphor; . . . it is the mark of genius, for to make good metaphors implies an eye for resemblances”.
Song, or melody, is fifth, and is the musical element of the chorus. Aristotle argues that the Chorus should be fully integrated into the play like an actor; choral odes should not be “mere interludes,” but should contribute to the unity of the plot
Spectacle is last, for it is least connected with literature; “the production of spectacular effects depends more on the art of the stage machinist than on that of the poet.” Although Aristotle recognizes the emotional attraction of spectacle, he argues that superior poets rely on the inner structure of the play rather than spectacle to arouse pity and fear; those who rely heavily on spectacle “create a sense, not of the terrible, but only of the monstrous”
Aristotle 4 vital elements
1) Psychological
2) Physical
3) Moral
4) Social
In the Poetics, Aristotle's famous study of Greek dramatic art, Aristotle (384-322 B.C.) compares tragedy to such other metrical forms as comedy and epic. He determines that tragedy, like all poetry, is a kind of imitation (mimesis), but adds that it has a serious purpose and uses direct action rather than narrative to achieve its ends. He says that poetic mimesis is imitation of things as they could be, not as they are — for example, of universals and ideals — thus poetry is a more philosophical and exalted medium than history, which merely records what has actually happened.
The aim of tragedy, Aristotle writes, is to bring about a "catharsis" of the spectators — to arouse in them sensations of pity and fear, and to purge them of these emotions so that they leave the theater feeling cleansed and uplifted, with a heightened understanding of the ways of gods and men. This catharsis is brought about by witnessing some disastrous and moving change in the fortunes of the drama's protagonist (Aristotle recognized that the change might not be disastrous, but felt this was the kind shown in the best tragedies — Oedipus at Colonus, for example, was considered a tragedy by the Greeks but does not have an unhappy ending).
According to Aristotle, tragedy has six main elements: plot, character, diction, thought, spectacle (scenic effect), and song (music), of which the first two are primary. Most of the Poetics is devoted to analysis of the scope and proper use of these elements, with illustrative examples selected from many tragic dramas, especially those of Sophocles, although Aeschylus, Euripides, and some playwrights whose works no longer survive are also cited.
Several of Aristotle's main points are of great value for an understanding of Greek tragic drama. Particularly significant is his statement that the plot is the most important element of tragedy:
Tragedy is an imitation, not of men, but of action and life, of happiness and misery. And life consists of action, and its end is a mode of activity, not a quality. Now character determines men's qualities, but it is their action that makes them happy or wretched. The purpose of action in the tragedy, therefore, is not the representation of character: character comes in as contributing to the action. Hence the incidents and the plot are the end of the tragedy; and the end is the chief thing of all. Without action there cannot be a tragedy; there may be one without character. . . . The plot, then, is the first principle, and, as it were, the soul of a tragedy: character holds the second place.
Aristotle goes on to discuss the structure of the ideal tragic plot and spends several chapters on its requirements. He says that the plot must be a complete whole — with a definite beginning, middle, and end — and its length should be such that the spectators can comprehend without difficulty both its separate parts and its overall unity. Moreover, the plot requires a single central theme in which all the elements are logically related to demonstrate the change in the protagonist's fortunes, with emphasis on the dramatic causation and probability of the events.
Aristotle has relatively less to say about the tragic hero because the incidents of tragedy are often beyond the hero's control or not closely related to his personality. The plot is intended to illustrate matters of cosmic rather than individual significance, and the protagonist is viewed primarily as the character who experiences the changes that take place. This stress placed by the Greek tragedians on the development of plot and action at the expense of character, and their general lack of interest in exploring psychological motivation, is one of the major differences between ancient and modern drama.
Since the aim of a tragedy is to arouse pity and fear through an alteration in the status of the central character, he must be a figure with whom the audience can identify and whose fate can trigger these emotions. Aristotle says that "pity is aroused by unmerited misfortune, fear by the misfortune of a man like ourselves." He surveys various possible types of characters on the basis of these premises, then defines the ideal protagonist as
. . . a man who is highly renowned and prosperous, but one who is not pre-eminently virtuous and just, whose misfortune, however, is brought upon him not by vice or depravity but by some error of judgment or frailty; a personage like Oedipus.
In addition, the hero should not offend the moral sensibilities of the spectators, and as a character he must be true to type, true to life, and consistent.
The hero's error or frailty (harmartia) is often misleadingly explained as his "tragic flaw," in the sense of that personal quality which inevitably causes his downfall or subjects him to retribution. However, overemphasis on a search for the decisive flaw in the protagonist as the key factor for understanding the tragedy can lead to superficial or false interpretations. It gives more attention to personality than the dramatists intended and ignores the broader philosophical implications of the typical plot's denouement. It is true that the hero frequently takes a step that initiates the events of the tragedy and, owing to his own ignorance or poor judgment, acts in such a way as to bring about his own downfall. In a more sophisticated philosophical sense though, the hero's fate, despite its immediate cause in his finite act, comes about because of the nature of the cosmic moral order and the role played by chance or destiny in human affairs. Unless the conclusions of most tragedies are interpreted on this level, the reader is forced to credit the Greeks with the most primitive of moral systems.
It is worth noting that some scholars believe the "flaw" was intended by Aristotle as a necessary corollary of his requirement that the hero should not be a completely admirable man. Harmartia would thus be the factor that delimits the protagonist's imperfection and keeps him on a human plane, making it possible for the audience to sympathize with him. This view tends to give the "flaw" an ethical definition but relates it only to the spectators' reactions to the hero and does not increase its importance for interpreting the tragedies.
The remainder of the Poetics is given over to examination of the other elements of tragedy and to discussion of various techniques, devices, and stylistic principles. Aristotle mentions two features of the plot, both of which are related to the concept of harmartia, as crucial components of any well-made tragedy. These are "reversal" (peripeteia), where the opposite of what was planned or hoped for by the protagonist takes place, as when Oedipus' investigation of the murder of Laius leads to a catastrophic and unexpected conclusion; and "recognition" (anagnorisis), the point when the protagonist recognizes the truth of a situation, discovers another character's identity, or comes to a realization about himself. This sudden acquisition of knowledge or insight by the hero arouses the desired intense emotional reaction in the spectators, as when Oedipus finds out his true parentage and realizes what crimes he has been responsible for.
Aristotle wrote the Poetics nearly a century after the greatest Greek tragedians had already died, in a period when there had been radical transformations in nearly all aspects of Athenian society and culture. The tragic drama of his day was not the same as that of the fifth century, and to a certain extent his work must be construed as a historical study of a genre that no longer existed rather than as a description of a living art form.
In the Poetics, Aristotle used the same analytical methods that he had successfully applied in studies of politics, ethics, and the natural sciences in order to determine tragedy's fundamental principles of composition and content. This approach is not completely suited to a literary study and is sometimes too artificial or formula-prone in its conclusions.
Nonetheless, the Poetics is the only critical study of Greek drama to have been made by a near-contemporary. It contains much valuable information about the origins, methods, and purposes of tragedy, and to a degree shows us how the Greeks themselves reacted to their theater. In addition, Aristotle's work had an overwhelming influence on the development of drama long after it was compiled. The ideas and principles of the Poetics are reflected in the drama of the Roman Empire and dominated the composition of tragedy in western Europe during the seventeenth, eighteenth, and nineteenth centuries.
http://www.cliffsnotes.com/literature/a/agamemnon-the-choephori-and-the-eumenides/critical-essay/aristotle-on-tragedy
Plot is the “first principle,” the most important feature of tragedy. Aristotle defines plot as “the arrangement of the incidents”: i.e., not the story itself but the way the incidents are presented to the audience, the structure of the play. According to Aristotle, tragedies where the outcome depends on a tightly constructed cause-and-effect chain of actions are superior to those that depend primarily on the character and personality of the protagonist. Plots that meet this criterion will have the following qualities . See Freytag's Triangle for a diagram that illustrates Aristotle's ideal plot structure, and for an application of this diagram to Sophocles’ play.
1. The plot must be “a whole,” with a beginning, middle, and end. The beginning, called by modern critics the incentive moment, must start the cause-and-effect chain but not be dependent on anything outside the compass of the play (i.e., its causes are downplayed but its effects are stressed). The middle, or climax, must be caused by earlier incidents and itself cause the incidents that follow it (i.e., its causes and effects are stressed). The end, or resolution, must be caused by the preceding events but not lead to other incidents outside the compass of the play (i.e., its causes are stressed but its effects downplayed); the end should therefore solve or resolve the problem created during the incentive moment . Aristotle calls the cause-and-effect chain leading from the incentive moment to the climax the “tying up” (desis), in modern terminology the complication. He therefore terms the more rapid cause-and-effect chain from the climax to the resolution the “unravelling” (lusis), in modern terminology the dénouement .
2. The plot must be “complete,” having “unity of action.” By this Aristotle means that the plot must be structurally self-contained, with the incidents bound together by internal necessity, each action leading inevitably to the next with no outside intervention, no deus ex machina . According to Aristotle, the worst kinds of plots are “‘episodic,’ in which the episodes or acts succeed one another without probable or necessary sequence”; the only thing that ties together the events in such a plot is the fact that they happen to the same person. Playwrights should exclude coincidences from their plots; if some coincidence is required, it should “have an air of design,” i.e., seem to have a fated connection to the events of the play . Similarly, the poet should exclude the irrational or at least keep it “outside the scope of the tragedy,” i.e., reported rather than dramatized . While the poet cannot change the myths that are the basis of his plots, he “ought to show invention of his own and skillfully handle the traditional materials” to create unity of action in his plot .
3. The plot must be “of a certain magnitude,” both quantitatively (length, complexity) and qualitatively (“seriousness” and universal significance). Aristotle argues that plots should not be too brief; the more incidents and themes that the playwright can bring together in an organic unity, the greater the artistic value and richness of the play. Also, the more universal and significant the meaning of the play, the more the playwright can catch and hold the emotions of the audience, the better the play will be.
4. The plot may be either simple or complex, although complex is better. Simple plots have only a “change of fortune” (catastrophe). Complex plots have both “reversal of intention” (peripeteia) and “recognition” (anagnorisis) connected with the catastrophe. Both peripeteia and anagnorisis turn upon surprise. Aristotle explains that a peripeteia occurs when a character produces an effect opposite to that which he intended to produce, while an anagnorisis “is a change from ignorance to knowledge, producing love or hate between the persons destined for good or bad fortune.” He argues that the best plots combine these two as part of their cause-and-effect chain (i.e., the peripeteia leads directly to theanagnorisis); this in turns creates the catastrophe, leading to the final “scene of suffering” .
Character has the second place in importance. In a perfect tragedy, character will support plot, i.e., personal motivations will be intricately connected parts of the cause-and-effect chain of actions producing pity and fear in the audience. The protagonist should be renowned and prosperous, so his change of fortune can be from good to bad. This change “should come about as the result, not of vice, but of some great error or frailty in a character.” Such a plot is most likely to generate pity and fear in the audience, for “pity is aroused by unmerited misfortune, fear by the misfortune of a man like ourselves.” The term Aristotle uses here, hamartia, often translated “tragic flaw,” has been the subject of much debate. The meaning of the Greek word is closer to “mistake” than to “flaw,” and I believe it is best interpreted in the context of what Aristotle has to say about plot and “the law or probability or necessity.” In the ideal tragedy, claims Aristotle, the protagonist will mistakenly bring about his own downfall—not because he is sinful or morally weak, but because he does not know enough. The role of the hamartiain tragedy comes not from its moral status but from the inevitability of its consequences. Hence the peripeteia is really one or more self-destructive actions taken in blindness, leading to results diametrically opposed to those that were intended (often termed tragic irony), and the anagnorisis is the gaining of the essential knowledge that was previously lacking .
Characters in tragedy should have the following qualities :
1. “good or fine.” Aristotle relates this quality to moral purpose and says it is relative to class: “Even a woman may be good, and also a slave, though the woman may be said to be an inferior being, and the slave quite worthless.”
2. “fitness of character” (true to type); e.g. valor is appropriate for a warrior but not for a woman.
3. “true to life” (realistic)
4. “consistency” (true to themselves). Once a character's personality and motivations are established, these should continue throughout the play.
5. “necessary or probable.” Characters must be logically constructed according to “the law of probability or necessity” that governs the actions of the play.
6. “true to life and yet more beautiful” (idealized, ennobled).
Thought is third in importance, and is found “where something is proved to be or not to be, or a general maxim is enunciated.” Aristotle says little about thought, and most of what he has to say is associated with how speeches should reveal character. However, we may assume that this category would also include what we call the themes of a play.
Diction is fourth, and is “the expression of the meaning in words” which are proper and appropriate to the plot, characters, and end of the tragedy. In this category, Aristotle discusses the stylistic elements of tragedy; he is particularly interested in metaphors: “But the greatest thing by far is to have a command of metaphor; . . . it is the mark of genius, for to make good metaphors implies an eye for resemblances”.
Song, or melody, is fifth, and is the musical element of the chorus. Aristotle argues that the Chorus should be fully integrated into the play like an actor; choral odes should not be “mere interludes,” but should contribute to the unity of the plot
Spectacle is last, for it is least connected with literature; “the production of spectacular effects depends more on the art of the stage machinist than on that of the poet.” Although Aristotle recognizes the emotional attraction of spectacle, he argues that superior poets rely on the inner structure of the play rather than spectacle to arouse pity and fear; those who rely heavily on spectacle “create a sense, not of the terrible, but only of the monstrous”
Aristotle 4 vital elements
1) Psychological
2) Physical
3) Moral
4) Social
In the Poetics, Aristotle's famous study of Greek dramatic art, Aristotle (384-322 B.C.) compares tragedy to such other metrical forms as comedy and epic. He determines that tragedy, like all poetry, is a kind of imitation (mimesis), but adds that it has a serious purpose and uses direct action rather than narrative to achieve its ends. He says that poetic mimesis is imitation of things as they could be, not as they are — for example, of universals and ideals — thus poetry is a more philosophical and exalted medium than history, which merely records what has actually happened.
The aim of tragedy, Aristotle writes, is to bring about a "catharsis" of the spectators — to arouse in them sensations of pity and fear, and to purge them of these emotions so that they leave the theater feeling cleansed and uplifted, with a heightened understanding of the ways of gods and men. This catharsis is brought about by witnessing some disastrous and moving change in the fortunes of the drama's protagonist (Aristotle recognized that the change might not be disastrous, but felt this was the kind shown in the best tragedies — Oedipus at Colonus, for example, was considered a tragedy by the Greeks but does not have an unhappy ending).
According to Aristotle, tragedy has six main elements: plot, character, diction, thought, spectacle (scenic effect), and song (music), of which the first two are primary. Most of the Poetics is devoted to analysis of the scope and proper use of these elements, with illustrative examples selected from many tragic dramas, especially those of Sophocles, although Aeschylus, Euripides, and some playwrights whose works no longer survive are also cited.
Several of Aristotle's main points are of great value for an understanding of Greek tragic drama. Particularly significant is his statement that the plot is the most important element of tragedy:
Tragedy is an imitation, not of men, but of action and life, of happiness and misery. And life consists of action, and its end is a mode of activity, not a quality. Now character determines men's qualities, but it is their action that makes them happy or wretched. The purpose of action in the tragedy, therefore, is not the representation of character: character comes in as contributing to the action. Hence the incidents and the plot are the end of the tragedy; and the end is the chief thing of all. Without action there cannot be a tragedy; there may be one without character. . . . The plot, then, is the first principle, and, as it were, the soul of a tragedy: character holds the second place.
Aristotle goes on to discuss the structure of the ideal tragic plot and spends several chapters on its requirements. He says that the plot must be a complete whole — with a definite beginning, middle, and end — and its length should be such that the spectators can comprehend without difficulty both its separate parts and its overall unity. Moreover, the plot requires a single central theme in which all the elements are logically related to demonstrate the change in the protagonist's fortunes, with emphasis on the dramatic causation and probability of the events.
Aristotle has relatively less to say about the tragic hero because the incidents of tragedy are often beyond the hero's control or not closely related to his personality. The plot is intended to illustrate matters of cosmic rather than individual significance, and the protagonist is viewed primarily as the character who experiences the changes that take place. This stress placed by the Greek tragedians on the development of plot and action at the expense of character, and their general lack of interest in exploring psychological motivation, is one of the major differences between ancient and modern drama.
Since the aim of a tragedy is to arouse pity and fear through an alteration in the status of the central character, he must be a figure with whom the audience can identify and whose fate can trigger these emotions. Aristotle says that "pity is aroused by unmerited misfortune, fear by the misfortune of a man like ourselves." He surveys various possible types of characters on the basis of these premises, then defines the ideal protagonist as
. . . a man who is highly renowned and prosperous, but one who is not pre-eminently virtuous and just, whose misfortune, however, is brought upon him not by vice or depravity but by some error of judgment or frailty; a personage like Oedipus.
In addition, the hero should not offend the moral sensibilities of the spectators, and as a character he must be true to type, true to life, and consistent.
The hero's error or frailty (harmartia) is often misleadingly explained as his "tragic flaw," in the sense of that personal quality which inevitably causes his downfall or subjects him to retribution. However, overemphasis on a search for the decisive flaw in the protagonist as the key factor for understanding the tragedy can lead to superficial or false interpretations. It gives more attention to personality than the dramatists intended and ignores the broader philosophical implications of the typical plot's denouement. It is true that the hero frequently takes a step that initiates the events of the tragedy and, owing to his own ignorance or poor judgment, acts in such a way as to bring about his own downfall. In a more sophisticated philosophical sense though, the hero's fate, despite its immediate cause in his finite act, comes about because of the nature of the cosmic moral order and the role played by chance or destiny in human affairs. Unless the conclusions of most tragedies are interpreted on this level, the reader is forced to credit the Greeks with the most primitive of moral systems.
It is worth noting that some scholars believe the "flaw" was intended by Aristotle as a necessary corollary of his requirement that the hero should not be a completely admirable man. Harmartia would thus be the factor that delimits the protagonist's imperfection and keeps him on a human plane, making it possible for the audience to sympathize with him. This view tends to give the "flaw" an ethical definition but relates it only to the spectators' reactions to the hero and does not increase its importance for interpreting the tragedies.
The remainder of the Poetics is given over to examination of the other elements of tragedy and to discussion of various techniques, devices, and stylistic principles. Aristotle mentions two features of the plot, both of which are related to the concept of harmartia, as crucial components of any well-made tragedy. These are "reversal" (peripeteia), where the opposite of what was planned or hoped for by the protagonist takes place, as when Oedipus' investigation of the murder of Laius leads to a catastrophic and unexpected conclusion; and "recognition" (anagnorisis), the point when the protagonist recognizes the truth of a situation, discovers another character's identity, or comes to a realization about himself. This sudden acquisition of knowledge or insight by the hero arouses the desired intense emotional reaction in the spectators, as when Oedipus finds out his true parentage and realizes what crimes he has been responsible for.
Aristotle wrote the Poetics nearly a century after the greatest Greek tragedians had already died, in a period when there had been radical transformations in nearly all aspects of Athenian society and culture. The tragic drama of his day was not the same as that of the fifth century, and to a certain extent his work must be construed as a historical study of a genre that no longer existed rather than as a description of a living art form.
In the Poetics, Aristotle used the same analytical methods that he had successfully applied in studies of politics, ethics, and the natural sciences in order to determine tragedy's fundamental principles of composition and content. This approach is not completely suited to a literary study and is sometimes too artificial or formula-prone in its conclusions.
Nonetheless, the Poetics is the only critical study of Greek drama to have been made by a near-contemporary. It contains much valuable information about the origins, methods, and purposes of tragedy, and to a degree shows us how the Greeks themselves reacted to their theater. In addition, Aristotle's work had an overwhelming influence on the development of drama long after it was compiled. The ideas and principles of the Poetics are reflected in the drama of the Roman Empire and dominated the composition of tragedy in western Europe during the seventeenth, eighteenth, and nineteenth centuries.
http://www.cliffsnotes.com/literature/a/agamemnon-the-choephori-and-the-eumenides/critical-essay/aristotle-on-tragedy