Autant vaut l'homme comme il s'estime—A 10 man is rated by others as he rates himself. Fr. Pr.

Aut bibat, aut abeat—Either drink or go.

Aut Cæsar aut nihil—Either Cæsar or nobody. M. of Cæsar Borgia.

Authority, not majority. Stahl.

Authors alone, with more than savage rage, / Unnatural war with brother authors wage. Churchill.

Authors are martyrs, witnesses to the truth, 15 or else nothing. Carlyle.

Authors may be divided into falling stars, planets, and fixed stars: the first have a momentary effect; the second, a much longer duration; and the third are unchangeable, possess their own light, and shine for all time. Schopenhauer.

Aut insanit homo, aut versus facit—The man is either mad, or he is making verses. Hor.

Aut non tentaris, aut perfice—Either don't attempt it, or go through with it. Ovid.

Auto-da-fé—An act of faith; a name applied to certain proceedings of the Inquisition connected with the burning of heretics.