Quixote: Don Q., hero in Cervantes' book of that title:
Proverbial deluded noble fool.
Deluded: His beliefs are false and his ends therefore not reachable.
Noble: He means well and is courageous and kind wherever possible.
Fool: He behaves and speaks like a crazy person when his
delusions are involved.
Also widely used by ordinary men
to brandish idealists among them, who try to make some sort of better
world: Ordinary men widely believe this is either not possible at all -
everybody must be as immoral as they know themselves to be in real life,
according to their own norms, or so ordinary men believe - or else only
if the authorities agree. And ordinary
men tend to be levellers: Nobody among them is allowed to be better than
they are, for which reasons they consider deluded whomever does not
share their prejudices.
Whence quixotic: Misguided