Regret is unnecessary. Think before you act.

The major cause for American Negroes intellectual and social deficits is hereditary and racially genetic in origin and thus not remedial to a major degree by improvement in environment.

I am overwhelmed by an irresistible temptation to do my climb by moonlight and unroped. This is contrary to all my rock climbing teaching & does not mean poor training, but only a strong-headedness.

It has today occurred to me that an amplifier using semiconductors rather than vacuum is in principle possible.[Laboratory notebook, 29 Dec 1939.]

We shouldn't teach great books we should teach a love of reading. Knowing the contents of a few works of literature is a trivial achievement. Being inclined to go on reading is a great achievement.

I wanted to be a comedian. I wanted to meet waitresses and felt that being a comedian was my best way to go about it and I was right.

The worst of all diseases is a nervous ability.

I like being broken. It means I can have chocolate for breakfast.

How imperfect is all our knowledge!

And a rock feels no pain; And an island never cries.

A man is the facade of a temple wherein all wisdom and all good abide.

I am far more comfortable with failure than I ever will be with success.

There is but one temple - the body. It is the only temple that ever existed.

Conflict can be seen as a gift of energy, in which neither side loses and a new dance is created.