[Asked about a book in which 100 Nazi professors charged him with scientific error.] Were I wrong, one professor would have been quite enough.

It is better to believe than to disbelieve; in doing you bring everything to the realm of possibility.

Conscious man, to be sure, has at all times been keenly aware that life is an adventure, that life must, forever, be wrested from death.

The most fundamental question we can ever ask ourselves is whether or not the universe we live in is friendly or hostile.

Imagination rules the earth

All religions, arts and sciences are branches of the same tree.

The man of science is a poor philosopher.