A centaur in Greek mythology is a creature that is half-human and half-horse. Representing the duality of nature, centaurs embody both civilized and wild aspects of existence. Often depicted as unruly and impulsive, they contrast with human intellect and reason. Famous centaurs include Chiron, known for his wisdom and healing abilities, distinguishing him from other centaurs who are typically portrayed as drunken and savage. The centaur myth reflects the struggle between humanity's civilized nature and its primal instincts.