Aristotle's Poetics is truly one of the greatest philosophical works ever written. For over two thousand years, philosophers, scholars, and thinkers have pored over every phrase and sentence of the master's words, as if they were precious nuggets of gold. There are enough commentaries to fill several thick volumes in a university library, which is quite remarkable considering that the entire Poetics is only about twenty pages long. It covers a wide range of topics, including plot, character, language, and two highly significant concepts: mimesis (imitation) and catharsis (inspiring pity or fear).
In our modern world, we may not listen to bards recite epics or go to amphitheaters to watch tragedies, but we still have plenty of experience with these dramatic elements. We read novels, watch films, and engage with various forms of fictional storytelling. To give you a taste of Aristotle's work, I will offer my own modest comments along with quotes from the text. Consider this an invitation to explore the Poetics on your own. Below, you will find a link to a fine translation and a second link to an extraordinarily clear, brief, and easy-to-follow commentary.
Let's start with Aristotle's observation that "Poetry in general seems to have sprung from two causes, each of them lying deep in our nature. First, the instinct of imitation is implanted in man from childhood, one difference between him and other animals being that he is the most imitative of living creatures, and through imitation learns his earliest lessons; and no less universal is the pleasure felt in things imitated... to learn gives the liveliest pleasure, not only to philosophers but to men in general." Ah, pleasure! And the pleasure of learning about life through imitation and fiction. Even if the story involves a Siberian prison camp or an insane chase of a white whale, there is a certain pleasure in identifying with a character and experiencing their plight. Our humanity is enriched in the process.
Aristotle also defines tragedy as "an imitation of an action that is serious, complete, and of a certain magnitude." For example, The Maltese Falcon begins with a very serious action: a murder. And the story is complete because at the end, the case is solved and the criminals are brought to justice. How many novels and films follow this formula? Probably millions.
He also acknowledges the importance of special effects in enhancing the action, stating that "Now as tragic imitation implies persons acting, it necessarily follows in the first place, that Spectacular equipment will be a part of Tragedy." Even in ancient Greece, Aristotle recognized the power of visual elements to engage the audience.
Furthermore, Aristotle emphasizes the role of plot twists and moments of recognition in creating emotional interest in tragedy. He writes, "The most powerful elements of emotional interest in Tragedy - Peripeteia or Reversal of the Situation, and Recognition scenes - are parts of the plot." I know that in the film Gone Girl, my interest would skyrocket with every reversal and recognition. I can just picture Gillian Flynn studying her Aristotle.
Finally, Aristotle remarks that "The greater the length, the more beautiful will the piece be by reason of its size, provided that the whole be perspicuous." When we commit to a three-hour movie or a nine-hundred-page novel, we expect it to be good. And when it is, it can be a truly rewarding experience.
So, there you have it - a brief introduction to Aristotle's Poetics. I hope this has piqued your interest and encouraged you to explore this fascinating work further. Remember, the links to the translation and commentary are provided below for your convenience. Happy reading!

Poetics, on line: http://classics.mit.edu/Aristotle/poe...
Commentary: http://www.english.hawaii.edu/critica...