The great theatre for virtue is conscience.

Nothing is so swift as calumny, nothing is more easily propagated, nothing more readily credited, nothing more widely circulated.

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.

It is virtue itself that produces and sustains friendship, not without virtue can friendship by any possibility exist.

Through doubt we arrive at the truth.

Old age, especially an honored old age, has so great authority, that this is of more value than all the pleasures of youth.

There is no life without friendship