Beauty of whatever kind, in its supreme development, invariably excites the sensitive soul to tears.

A scientist in his laboratory is not a mere technician: he is also a child confronting natural phenomena that impress him as though they were fairy tales.?

He who never made a mistake, never made a discovery.

What is to give light must endure burning.

My idea of an agreeable person is a person who agrees with me.

If everything isn't black and white, I say, 'Why the hell not?'

External nature is only internal nature writ large.

I think we're having fun. I think our customers really like our products. And we're always trying to do better.

Never go to a doctor whose office plants have died.

Never lend your car to someone you've given birth to.

Passion goes, Boredom remains.

Moonlight is sculpture.

Go on, get out. Last words are for fools who haven't said enough.

Be less curious about people and more curious about ideas.

In the intellectual order, the virtue of humility is nothing more nor less than the power of attention.

There is only one difference between a madman and me. The madman thinks he is sane. I know I am mad.

One's only rival is one's own potentialities. One's only failure is failing to live up to one's own possibilities. In this sense, every man can be a king, and must therefore be treated like a king.

Deep in the human unconscious is a pervasive need for a logical universe that makes sense. But the real universe is always one step beyond logic.

For a moment, nothing happened. Then, after a second or so, nothing continued to happen.

The hardest thing to explain is the glaringly evident which everybody has decided not to see.

Courage is being scared to death... and saddling up anyway.