Demiurgus, a name employed by Plato to denote the world-soul, the medium by which the idea is made real, the spiritual made material, the many made one, and it was adopted by the Gnostics to denote the world-maker as a being derived from God, but estranged from God, being environed in matter, which they regarded as evil, and so incapable as such of redeeming the soul from matter, from evil, such as the God of the Jews, and the Son of that God, conceived of as manifest in flesh.