Humour is not a mood but a way of looking at the world.[Humor ist keine Stimmung, sondern eine Weltanschauung.]
Humour is but the faint terrestrial echo of the hideous laughter of the blind mad gods that squat leeringly and sardonically in caverns beyond the Milky Way. It is a hollow thing, sweet on the outside, but filled with the pathos of fruitless aspiration.
Humor is the ability to discern in a kindly way the folly in what is considered normal, sublime behavior, and to discern the discrepancy in what appears as a truth.