Nothing proceeds from nothingness, as also nothing passes away into non-existence.

The things you think about determine the quality of your mind. Your soul takes on the color of your thoughts.

Never esteem anything as of advantage to you that will make you break your word or lose your self-respect.

I am called to man's labour; why then do I make a difficulty if I am going out to do what I was born to do and what I was brought into the world for?

All things from eternity are of like forms and come round in circle.

Within ten days thou wilt seem a god to those to whom thou art now a beast and an ape, if thou wilt return to thy principles and the worship of reason.

Ambition means tying your well-being to what other people say or do. Self-indulgence means tying it to the things that happen to you. Sanity means tying it to your own actions.