In good speaking, should not the mind of the speaker know the truth of the matter about which he is to speak.

But that we shall be better and braver and less helpless if we think that we ought to enquire, than we should have been if we indulged in the idle fancy that there was no knowing and no use in seeking to know what we do not know; - that is a theme upon which I am ready to fight, in word and deed, to the utmost of my power.

Truth is the beginning of every good to the gods, and of every good to man.

The whole life of the philosopher is a preparation for death.

True opinions are a fine thing and do all sorts of good so long as they stay in their place; but they will not stay long. They run away from a man's mind, so they are not worth much until you tether them by working out the reason. Once they are tied down, they become knowledge, and are stable.

When the citizens of a society can see and hear their leaders, then that society should be seen as one.

Sin is disease, deformity, and weakness.