Note 2 — Chapter II

The three unities of action, place, and time are usually believed to have been formulated by Aristotle, who is supposed to have said that a tragedy should have but a single plot and that the action should be confined to a single day and a single place. As a matter of fact, Aristotle is responsible for only the first of these, and this he presented as an observation on the actual condition which prevailed in Greek tragedy rather than as a dramatic principle for all time. The other principles, which were later deduced from the general practice of the Greeks,—a practice arising from the manner in which their plays were staged,—were, together with the first, elevated by the Romans to the dignity of fixed dramatic laws.