All of the wisdom of this world is but a tiny raft upon which we must set sail when we leave this earth. If only there was a firmer foundation upon which to sail, perhaps some divine word.

This is...self-knowled ge-for a man to know what he knows, and what he does not know.

Follow the argument wherever it leads.

The body cannot be cured without regard for the soul.

He said that there was one only good, namely, knowledge; and one only evil, namely, ignorance.

I have not sought during my life to amass wealth and to adorn my body, but I have sought to adorn my soul with the jewels of wisdom, patience, and above all with a love of liberty.

The soul, like the body, accepts by practice whatever habit one wishes it to contact.