Each possession I own is but a stone around my neck.

Mere thinking cannot reveal to us the highest purpose.

Intuitive powers played a central role in my scientific work, not wild speculation, yet a valued resource when no other approach was available.

As I look back over the truly crucial events in my life I realize that they were not planned long in advance. Albert Einstein said, 'There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is.'

It is a very high goal which, with our weak powers, we can reach only very inadequately, but which gives a sure foundation to our aspirations and valuations.

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

The important thing is not to stop questioning. Curiosity has its own reason for existing. One cannot help but be in awe when he contemplates the mysteries of eternity, of life, of the marvelous structure of reality. It is enough if one tries merely to comprehend a little of this mystery every day. Never lose a holy curiosity.