“What can be added to the happiness of a man who is in health, out of debt, and has a clear conscience?”– Adam Smith Related Quotes “Happiness is the only sanction of life where happiness fails, existence remains a mad and lamentable experiment.”– George Santayana “Money can’t buy you happiness, but it can buy you a yacht big enough to pull up right alongside it.”– David Lee Roth “A comfortable house is a great source of happiness. It ranks immediately after health and a good conscience.”– Sydney Smith