Such self-transformation is the most difficult and dangerous challenge to the imagination, and it is the most rewarding. Meeting it is only possible for the person whose mind is open to contradictions and well-practiced in free conjecture.

The reason so many promises are not kept is the same as the reason they are made in the first place.

The goal of discoverers is not to outdistance their peers, but to transcend themselves.

Those who labor for bread or money alone are condemned to their reward.

We struggle with, agonize over and bluster heroically about the great questions of life when the answers to most of these lie hidden in our attitude toward the thousand minor details of each day.

True intimacy is a human constant. People of all types find it equally hard to achieve, equally precious to hold. Age, education, social status, make little difference here; even genius does not presuppose the talent to reveal one's self completely and completely absorb one's self in another personality. Intimacy is to love what concentration is to work: a simultaneous drawing together to attention and release of energy.

Fast drivers can see no further than slow drivers, but they must look further down the road to time their reactions safely. Similarly, people with great projects afoot habitually look further and more clearly into the future than people who are mired in day-to-day concerns.