If you don't know what port you are sailing to, no wind is favourable.

The profit on a good action is to have done it.

The mind is a matter over every kind of fortune; itself acts in both ways, being the cause of its own happiness and misery.

But when you are looking on anyone as a friend when you do not trust him as you trust yourself, you are making a grave mistake, and have failed to grasp sufficiently the full force of true friendship.

Truth will never be tedious unto him that travelleth in the secrets of nature; there is nothing but falsehood that glutteth us.

Go on and increase in valor, O boy! this is the path to immortality.

We often want one thing and pray for another, not telling the truth even to the gods.