I urge a willingness to reserve a place in rational science for non-rational wonder.

I think that only daring speculation can lead us further and not accumulation of facts.

I prefer an attitude of humility corresponding to the weakness of our intellectual understanding of nature and of our own being.

Live your life... as though everything is a miracle.

The significant problems we have cannot be solved at the same level of thinking with which we created them.

When I have one week to solve a seemingly impossible problem, I spend six days defining the problem. Then, the solution becomes obvious.

Do not grow old, no matter how long you live. Never cease to stand like curious children before the Great Mystery into which we were born.