Mediocrity thrives on standardization. Everyone has a photographic memory. Some just don't have any film. When the chips are down, the buffalo is empty. Those who live by the sword get shot by those who don't.
Nothing is fool-proof to a sufficiently talented fool.
A day without sunshine is like night. On the other hand, you have more fingers. The two most common elements in the universe are hydrogen and stupidity. If at first you don't succeed, skydiving is not for you. Money can't buy happiness, but is sure makes misery easier to live with.