The drama is complete poetry. The ode and the epic contain it only in germ; it contains both of them in a state of high development, and epitomizes both.
The popular definition of tragedy is heavy drama in which everyone is killed in the last act, comedy being light drama in which everyone is married in the last act.
Drama, instead of telling us the whole of a man's life, must place him in such a situation, tie such a knot, that when it is untied, the whole man is visible.