To say no at the right time, and then stand by it, is the first element of success. He is the wise man who, for all his life, can keep mind and soul and body clean.
David Starr Jordan"I am not much of a mathematician," said the cigarette, "but I can add to a man's nervous troubles, I can subtract from his physical energy, I can multiply his aches and pains, I can divide his mental powers, I take interest from his work, and discount his chances for success."
David Starr Jordan