Indeed he knows not how to know who knows not also how to un-know.

Do what thy manhood bids thee do, from none but self expect applause;He noblest lives and noblest dies who makes and keeps his self-made laws.

Constancy is the foundation of virtue.

The human understanding, from its peculiar nature, easily supposes a greater degree of order and regularity in things than it really finds.

Again men have been kept back as by a kind of enchantment from progress in science by reverence for antiquity, by the authority of men counted great in philosophy, and then by general consent.

Seek ye first the good things of the mind, and the rest will either be supplied or its loss will not be felt.