To make a great dream come true, you must first have a great dream.
Almost no germ is unconditionally dangerous to man; its disease-producing ability depends upon the body's resistance.
The healthiest of all human emotions is gratitude.
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.
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.