“As much as we thirst for approval we dread condemnation.”

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.

The healthiest of all human emotions is gratitude.

Man should not try to avoid stress any more than he would shun food, love or exercise.

To be totally without stress is to be dead.

Indeed, not all attacks-especially the bitter and ridiculing kind leveled at Darwin-are offered in good faith, but for practical purposes it is good policy to assume that they are.

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

Its not stress that kills us, it is our reaction to it.

To make a great dream come true, you must first have a great dream.

Stress is the spice of life.

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

Nothing erases unpleasant thoughts more effectively than conscious concentration on pleasant ones.

Gratitude is the most important of all human emotions.

Almost no germ is unconditionally dangerous to man; its disease-producing ability depends upon the body’s resistance.

My advice to any young person at the beginning of their career is to try to look for the mere outlines of big things with their fresh, untrained and unprejudiced mind.

Adopting the right attitude can convert a negative stress into a positive one.

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