It is always easy to break one’s word to oneself. - Giacomo Casanova

You will laugh when you discover that I often had no scruples about deceiving nitwits and scoundrels and fools when I found it necessary. As for women, this sort of reciprocal deceit cancels itself out, for when love enters in, both parties are usually dupes

As for myself, I always willingly acknowledge my own self as the principal cause of every good and of every evil which may befall me; therefore, I have always found myself capable of being my own pupil, and ready to love my teacher.

THE MAN WHO MAKES NO MISTAKES USUALLY MAKES NOTHING