the apprentice clodpool, in a rebellious mood, approached wen and spake thusly:
master, what is the difference between a humanistic, monastic system of belief in which wisdom is sought by means of an apparently nonsensical system of questions and answers, and a lot of mystic gibberish made up on the spur of the moment?
wen considered this for some time and at last said: 'a fish!'
and clodpool went away, satisfied.
[terry pratchett, thief of time]