Jokes are very curious things psychologically.

It's different when you become a professional, because you also have to become a businessman, and that takes something away from it.

Nothing is so intolerable to man as being fully at rest, without passion, without business, without entertainment, without care. It is then that he recognizes that he is empty, insufficient, dependent, ineffectual. From the depths of his soul now comes at once boredom, gloom, sorrow, chagrin, resentment and despair.