Of all knowledge the wise and good seek most to know themselves.

If the painter has clumsy hands, he will be apt to introduce them into his works, and so of any other part of his person, which may not happen to be so beautiful as it ought to be. He must, therefore, guard particularly against that self-love, or too good opinion of his own person, and study by every means to acquire the knowledge of what is most beautiful, and of his own defects, that he may adopt the one and avoid the other.

He who has conquered the internal nature controls the whole universe; it becomes his servant.

It is better to point out your own mistakes than have somebody else do it.

It's important to be self-aware about what people are saying about you, but even more so, be very aware of who you actually are, and to have that be the main priority.

I don't know if you know who you are, until you lose who you are.