In the Platonic, Neopythagorean, Middle Platonic, and Neoplatonic schools of philosophy, the demiurge is an artisan-like figure responsible for the fashioning and maintenance of the physical universe. The term was subsequently adopted by the Gnostics. Although a fashioner, the demiurge is not necessarily the same as the creator figure in the familiar monotheistic sense, because both the demiurge itself plus the material from which the demiurge fashions the universe are considered either uncreated and eternal, or the product of some other being, depending on the system.