“If you can’t explain it simply, you don’t understand it well enough.”

Ever since I arrived at the state of manhood... I have been a person of business.

The true sign of intelligence is not knowledge but imagination.

It is a terrible thing to see and have no vision.

It is the supreme art of the teacher to awaken joy in creative expression and knowledge.

Love and intimacy are at the root of what makes us sick and what makes us well.

The great proof of madness is the disproportion of one's designs to one's means.