Every philosophy is tinged with the coloring of some secret imaginative background, which never emerges explicitly into its train of reasoning.

Each human being is a more complex structure than any social system to which he belongs.

Knowledge shrinks as wisdom grows.

Through and through the world is infested with quantity: To talk sense is to talk quantities. It is no use saying the nation is large. . . . How large? It is no use saying the radium is scarce. . . . How scarce? You cannot evade quantity. You may fly to poetry and music, and quantity and number will face you in your rhythms and your octaves.

Almost all new ideas have a certain aspect of foolishness when they are first produced.

The aim of science is to seek the simplest explanation of complex facts... Seek simplicity and distrust it.

I would be a billionaire if I was looking to be a selfish boss. That's not me.