“The ego resembles the rider who is supposed to rein in the superior strength of the horse, with the difference that the rider does this with his own, the ego with borrowed strength…Just as there often remains nothing for the rider, if he does not want to be separated from the horse, but to lead it where it wants to go, so the ego, too, is accustomed to translating the will of the id into action as if that will were all its own.”
–Sigmund Freud, The Ego and the Id