There is no logical way to the discovery of these elemental laws. There is only the way of intuition, which is helped by a feeling for the order lying behind the appearance.

If A is a success in life, then A equals x plus y plus z. Work is x; y is play; and z is keeping your mouth shut

Nationalism is an infantile disease. It is the measles of mankind.

Don't listen to their words, fix your attention on their deeds.

The ability to portray people in still life and in motion requires the highest measure of intuition and talent.

This change in the conception of reality is the most profound and the most fruitful that physics has experienced since the time of Newton. Refering to James Clerk Maxwell's contributions to physics.

Our world faces a crisis as yet unperceived by those possessing power to make great decisions for good or evil. The unleashed power of the atom has changed everything save our modes of thinking and we thus drift toward unparalleled catastrophe.