Famed violinist Jascha Heifetz once told his enthusiastic new secretary that he needn't compliment him after every performance. "If I play well," he explained, "I know it myself. If I don't, I shall only be disappointed if you flatter me."
After a particularly successful concert some time later, Heifetz accosted his secretary. "What's the matter!?" he roared. "You don't like music!?"