From The Art and Popular Culture Encyclopedia
"Hegel remarks somewhere that all great world-historic facts and personages appear, so to speak, twice. He forgot to add: the first time as tragedy, the second time as farce." --"The Eighteenth Brumaire of Louis Napoleon" (1852) by Karl Marx
"That horrible "witches' draught" of sensuality and cruelty was here powerless: only the curious blending and duality in the emotions of the Dionysian revellers reminds one of it—just as medicines remind one of deadly poisons,—that phenomenon, to wit, that pains beget joy, that jubilation wrings painful sounds out of the breast. From the highest joy sounds the cry of horror or the yearning wail over an irretrievable loss."--The Birth of Tragedy (1872) by Nietzsche
While most cultures have developed forms that provoke this paradoxical response, tragedy refers to a specific tradition of drama that has played a unique and important role historically in the self-definition of Western civilization. That tradition has been multiple and discontinuous, yet the term has often been used to invoke a powerful effect of cultural identity and historical continuity—"the Greeks and the Elizabethans, in one cultural form; Hellenes and Christians, in a common activity," as Williams puts it.
From its obscure origins in the theatres of Athens 2500 years ago, from which there survives only a fraction of the work of Aeschylus, Sophocles and Euripides, through its singular articulations in the works of Shakespeare, Lope de Vega, Racine, or Schiller, to the more recent naturalistic tragedy of Strindberg, Beckett's modernist meditations on death, loss and suffering, or Müller's postmodernist reworkings of the tragic canon, tragedy has remained an important site of cultural experimentation, negotiation, struggle, and change. A long line of philosophers—which includes Plato, Aristotle, Saint Augustine, Voltaire, Hume, Diderot, Hegel, Schopenhauer, Kierkegaard, Nietzsche, Freud, Benjamin, Camus, Lacan and Deleuze—have analysed, speculated upon and criticised the tragic form.
In the wake of Aristotle's Poetics (335 BCE), tragedy has been used to make genre distinctions, whether at the scale of poetry in general, where the tragic divides against epic and lyric, or at the scale of the drama, where tragedy is opposed to comedy. In the modern era, tragedy has also been defined against drama, melodrama, the tragicomic and epic theatre.
Many ancient Greek tragedians employed the ekkyklêma as a theatrical device, which was a platform hidden behind the scene that could be rolled out to display the aftermath of some event which had happened out of sight of the audience. This event was frequently a brutal murder of some sort, an act of violence which could not be effectively portrayed visually, but an action of which the other characters must see the effects in order for it to have meaning and emotional resonance. A prime example of the use of the ekkyklêma is after the murder of Agamemnon in the first play of Aeschylus' Oresteia, when the king's butchered body is wheeled out in a grand display for all to see. Variations on the ekkyklêma are used in tragedies and other forms to this day, as writers still find it a useful and often powerful device for showing the consequences of extreme human actions. Another such device was a crane, the mechane, which served to hoist a god or goddess on stage when they were supposed to arrive flying. This device gave origin to the phrase "deus ex machina" ("god out of a machine"), that is, the surprise intervention of an unforeseen external factor that changes the outcome of an event.