If any successes has come to me, it came because I insisted on thinking things through. That's all I was capable of doing in life, was thinking pretty hard about trying to get the right answer, and then acting on it. I never learned to do anything else.

We should take care not to make the intellect our god; it has, of course, powerful muscles, but no personality.

Everything that can be counted does not necessarily count; everything that counts cannot necessarily be counted.

The height of foolishness is to discard an opportunity without full investigation

You have to live spherically - in many directions. Never lose your childish enthusiasm - and things will come your way.

Diseases can be our spiritual flat tires - disruptions in our lives that seem to be disasters at the time but end by redirecting our lives in a meaningful way.