Student is not a container you have to fill but a torch you have to light up.

I do not share the crusading spirit of the professional atheist whose fervor is mostly due to a painful act of liberation from the fetters of religious indoctrination received in youth. I prefer an attitude of humility corresponding to the weakness of our intellectual understanding of nature and of our own being.

The greater the doubt, the greater the awakening

Three great forces rule the world: stupidity, fear and greed.

Growth comes through analogy; through seeing how things connect, rather than only seeing how they might be different.

One is born into a herd of buffaloes and must be glad if one is not trampled under foot before one's time.

You ask me if I keep a notebook to record my great ideas. I've only ever had one.