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.

Stress is the spice of life.

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

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

If you want to live a long life, focus on making contributions .

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.