"The fact is that the work which improves the condition of mankind, the work which extends knowledge and increases power and enriches literature, and elevates thought, is not done to secure a living. It is not the work of slaves, driven to their task either by the lash of a master or by animal necessities. It is the work of men who perform it for their own sake, and not that they may get more to eat or drink, or wear, or display. In a state of society where want is abolished, work of this sort could be enormously increased."
Henry George, Progress and Poverty (1879).