The hardest thing to understand in the world is the income tax.

Betterment of conditions the world over is not essentially dependent on scientific knowledge but on the fulfillment of human traditions and ideals.

I was just more stubborn and more passionate than most about physics.

Although I cannot believe that the individual survives the death of his body, feeble souls harbor such thought through fear or ridiculous egotism.

Small is the number of people who see with their eyes and think with their minds.

Every day, man is making bigger and better fool-proof things, and every day, nature is making bigger and better fools. So far, I think nature is winning.

Wisdom is not a product of schooling but of the lifelong attempt to acquire it.