“Of this there can be no question — creative work requires a loyalty as complete as the loyalty of water to the force of gravity. A person trudging through the wilderness of creation who does not know this — who does not swallow this — is lost. He who does not crave that roofless place eternity should stay at home. Such a person is perfectly worthy, and useful, and even beautiful, but is not an artist. Such a person had better live with timely ambitions and finished work formed for the sparkle of the moment only. Such a person had better go off and fly an airplane.”