If you took half of something and continued to take half of that half and so on, you would never reach an end.

Without creative, independently thinking and judging personalities the upward development of society is as unthinkable as the development of the individual personality without the nourishing soil of the community.

Fantasie is belangrijker dan kennis, want kennis is begrensd.

It's not that I'm so smart, it's just that I stay with problems longer.

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.

Most mistakes in philosophy and logic occur because the human mind is apt to take the symbol for the reality.

Human beings, in their thinking, feeling and acting are not free agents but are as causally bound as the stars in their motion.