Long hair minimizes the need for barbers; socks can be done without; one leather jacket solves the coat problem for many years; suspenders are superfluous.

The supreme task of the physicist is to arrive at those universal elementary laws from which the cosmos can be built up by pure deduction. There is no logical path to these laws; only intuition, resting on sympathetic understanding of experience, can reach them.

When I was a fairly precocious young man I became thoroughly impressed with the futility of the hopes and strivings that chase most men restlessly through life. Moreover, I soon discovered the cruelty of that chase, which in those years was much more carefully covered up by hypocrisy and glittering words than is the case today. By the mere existence of his stomach everyone was condemned to participate in that chase. The stomach might well be satisfied by such participation, but not man insofar as he is a thinking and feeling being.

The idea of a personal God is an anthropological concept which I am unable to take seriously.

I think and think for months and years. Ninety-nine times, the conclusion is false. The hundredth time I am right.

I refuse to make money out of my science. My laurel is not for sale like so many bales of cotton.

Do you remember how electrical currents and 'unseen waves' were laughed at? The knowledge about man is still in its infancy.