I have never obtained any ethical values from my scientific work.

In matters of trust and justice there can be no distinction between big problems and small, for the general principles which determine the conduct of men are indivisible. Whoever is careless with the truth in small matters cannot be trusted in important affairs.

If the workers of this world, men and women, decide not to manufacture and transport ammunition, it would end war for all time. We must do that. Dedicate our lives to drying up the source of war; ammunition factories.

Make everything as simple as possible, but not simpler.

Though our conduct seems so very different from that of the higher animals, the primary instincts are much alike in them and in us.

When I have one week to solve a seemingly impossible problem, I spend six days defining the problem. Then, the solution becomes obvious.

I want to be cremated so people won't come to worship at my bones.