“The problem is that we think the opposite of funny is serious. It is not. In fact, as G. K. Chesterton pointed out, the opposite of funny is not funny, and the opposite of serious is not serious.
Humour has its uses. Laughter can get through the keyhole while seriousness is still hammering on the door. New ideas can ride in on the back of a joke; old ideas can be given an added edge.”
– Terry Pratchett, A Slip of the Keyboard: Collected Non-Fiction (p. 130)