"I think it is a rule that men in business should not be taught other things. Any one will be almost sure to make money who has no other idea in his head. A college education, or intense study of abstract truth, will not enable a man to drive a bargain … The best politicians are not those who are deeply grounded in mathematical or in ethical science. Rules stand in the way of expediency. Many a man has been hindered from pushing his fortune in the world by an early cultivation of his moral sense."