Never lose sight of this important truth, that no one can be truly great until he has gained a knowledge of himself, a knowledge which can only be acquired by occasional retirement.
All things may corrupt when minds are prone to evil.
Practice, the master of all things.
No man is happy without a delusion of some kind. Delusions are as necessary to our happiness as realities.
In anger we should refrain both from speech and action.
Do not talk a little on many subjects, but much on a few.
Choose rather to be strong of soul than strong of body.
In a heated argument we are apt to lose sight of the truth.