“Science and everyday life cannot and should not be separated.”

When you meet someone better than yourself, turn your thoughts to becoming his equal. When you meet someone not as good as you are, look within and examine your own self.

I keep six honest serving-men (They taught me all I knew); their names are What and Why and When and How and Where and Who.

Kind words do not cost much. Yet they accomplish much.

He who knows himself is enlightened.

Never apologize for showing feelings. When you do so, you apologize for the truth.

I have no special talent. I am only passionately curious.

Elegance is the only beauty that never fades.

If you don't like something, change it. If you can't change it, change your attitude.