Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

It is open to every man to choose the direction of his striving; and also every man may draw comfort from Lessing's fine saying, that the search for truth is more precious than its possession.

The whole of science is nothing more than a refinement of everyday thinking.

But their intervention makes our acts to serve ever less merely the immediate claims of our instincts.

In my view, it is the most important function of art and science to awaken this feeling and keep it alive in those who are capable of it.

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.

The fairest thing we can experience is the mysterious. It is the fundamental emotion that stands at the cradle of true art and true science. It is the source of all true art and science. He who knows it not and can no longer wonder, no longer feel amazement, is as good as dead, a snuffed-out candle.