A man's worth is no greater than his ambitions.

As surgeons keep their instruments and knives always at hand for cases requiring immediate treatment, so shouldst thou have thy thoughts ready to understand things divine and human, remembering in thy every act, even the smallest, how close is the bond that unites the two.

Nature has given to each conscious being every power she possesses, and one of these abilities is this: just as Nature converts and alters every obstacle and opposition, and fits them into their predestined place, making them a part of herself, so too the rational person is able to finesse every obstacle into an opportunity, and to use it for whatever purpose it may suit.

Think of the country mouse and of the town mouse, and of the alarm and trepidation of the town mouse.

The first rule is to keep an untroubled spirit. The second is to look things in the face and know them for what they are.

Submit to the fate of your own free will.

Men exist for the sake of one another.