Why is this thus? What is the reason for this thusness?
-- Artemus Ward

"Women need a reason to have sex. Men just need a place."
-- Billy Crystal

Men actually do need a reason, but for men, "Because it's fun" is reason enough.

Imagination is the one weapon in the war against reality.
-- Jules de Gaultier

Unfortunately, many of us lose this weapon (or have it forcibly taken
away) by the time we leave school.