Every reminiscence is colored by the way things are today, and therefore by a delusive point of view.

Despite my being an old gypsy there is a tendency to respectability inherent in old age.

Imagination is greater than knowledge.

If I could do it all again, I'd be a plumber.

The single most important decision any of us will ever make is whether or not to believe the universe is friendly.

The scientist finds his reward in what Henri Poincare calls the joy of comprehension, and not in the possibility of application to which any discovery may lead.

In the middle of difficulties lie opportunities.