The finest emotion of which we are capable is the mystic emotion.

Agreements about what is good or not, are usually not worth much. It is very much like art, is it not an art to lead a good life?

It is the theory which decides what we can observe

The only real valuable thing is intuition. The intellect has little to do on the road to discovery

Almost all the other fellows do not look from the facts to the theory but from the theory to the facts; they cannot get out of the network of already accepted concepts; instead, comically, they only wriggle about inside.

Education is what remains after one has forgotten what one has learned in school.

Insofar as mathematics is true, it does not describe the real world. Insofar as it describes the real world, it is not true.