The mind becomes accustomed to things by the habitual sight of them, and neither wonders nor inquires about the reasons for things it sees all the time.

By doubting we come at truth.

Friendship is given us by nature, not to favor vice, but to aid virtue.

For nothing is more commendable, nothing more becoming in a preeminently great man than courtesy and forbearance.

If wisdom be attainable, let us not only win but enjoy it.

We are bound by the law, so that we may be free.

It is graceful in a man to think and to speak with propriety, to act with deliberation, and in every occurrence of life to find out and persevere in the truth. On the other hand, to be imposed upon, to mistake, to falter, and to be deceived, is as ungraceful as to rave or to be insane.