Authors:

A professional is a man who can do his job when he doesn't feel like it. An amateur is a man who can't do his job when he does feel like it.

James Agate (1946). “A Shorter Ego: The Autobiography of James Agate”
A professional is a man who can do his job when he doesn't feel like it. An amateur is a man who can't do his job when he does feel like it.