The essential thing 'in heaven and in earth' is,
apparently (to repeat it once more), that there
should be long OBEDIENCE in the same direction;
there thereby results, and has always resulted
in the long run, something which has made
life worth living; for instance, virtue, art,
music, dancing, reason, spirituality--anything
whatever that is transfiguring, refined,
foolish, or divine.
Friedrich Nietszche,
Beyond Good and Evil (1886)