David Brin, scientist and science fiction author (b. 6 Oct 1950)
It's said that "power corrupts," but actually it's more true that power
attracts the corruptible. The sane are usually attracted by other things
than power. When they do act, they think of it as service, which has
limits. The tyrant, though, seeks mastery, for which he is insatiable,
implacable.