To be totally without stress is to be dead.

Mental tensions, frustrations, insecurity, aimlessness are among the most damaging stressors, and psychosomatic studies have shown how often they cause migraine headache, peptic ulcers, heart attacks, hypertension, mental disease, suicide, or just hopeless unhappiness.

The fairest thing we can experience is the mysterious. It is the fundamental emotion which stands at the cradle of true science. He who knows it not, and can no longer wonder, no longer feel amazement, is as good as dead. We all had this priceless talent when we were young. But as time goes by, many of us lose it. The true scientist never loses the faculty of amazement. It is the essence of his being.

The builder of the best racing car is not necessarily its best driver.

The element of chance in basic research is overrated. Chance is a lady who smiles only upon those few who know how to make her smile.

Gratitude conserves the vital energies of a person more than any other attitude tested.

Even after the greatest defeats, the depressing thought of being a failure is best combated by taking stock of all your past achievements.