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.

Regret is unnecessary. Think before you act.

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.]

Babel because the Lord did there confound the language of all the earth.

Who listens to golfers? They're boring. If I want to wear camouflage on the golf course during a tournament, I will. And I have.

There is no thrill of mortal danger to surpass that of a lone man trying to create something that never existed before.

When I was born my father spent three weeks trying to find a loophole in my birth certificate.

Don't think that you can make up for it by working twice as hard tomorrow. If you have it within your power to work twice as hard, why aren't you doing it now?

Love means setting aside walls, fences, and unlocking doors and saying 'Yes.' One can be in paradise by simply saying 'yes' to this moment.

Your great power lies not on the surface, but deep within your being.

We do everything by custom, even believe by it; our very axioms, let us boast of free-thinking as we may, are oftenest simply such beliefs as we have never heard questioned.

There is far too much of the feeding-bottle in education and young people ought to be supplied with good intellectual food and then left to help themselves.

But if the technological Singularity can happen, it will.