Be a loner. That gives you time to wonder.

A society's competitive advantage will come not from how well its schools teach the multiplication and periodic tables, but from how well they stimulate imagination and creativity.

The finest emotion of which we are capable is the mystic emotion. Herein lies the germ of all art and all true science. Anyone to whom this feeling is alien, who is no longer capable of wonderment and lives in a state of fear is a dead man.

I have repeatedly said that in my opinion the idea of a personal God is a childlike one.

It has often been said, and certainly not without justification, that the man of science is a poor philosopher.

People start their lives at last when they are able to live for something other than themselves.

I have always loved solitude, a trait which tends to increase with age.