True art is characterized by an irresistible urge in the creative artist.

He who finds a thought that lets us a little deeper into the eternal mystery of nature has been granted great peace.

Let me tell you what I look like: pale face, long hair, and a tiny start of a paunch. In addition, an awkward gait, and a cigar in the mouth and a pen in pocket or hand.

What physics looks for: The simplest possible system of thought which will bind together the observed facts.

The supreme goal of all theory is to make the irreducible basic elements as simple and as few as possible without having to surrender the adequate representation of a simple datum of experience.

We can't solve today's problems with the mentality that created them.

There is nothing divine about morality, it is a purely human affair.