Pistorius is a character whom Sinclair meets while in high school and apart from Demian. He also serves as a guide for Sinclair, providing him with a vast background of religious knowledge, particularly about the Gnostic deity Abraxas. Serving also as an amateur psychologist, the character of Pistorius is probably based upon Dr. J. B. Lang, who aided Hesse during his period of mental strife. Pistorius is finally surpassed by his student and is cast aside because Sinclair must ultimately find his own way.