Dr. Chet Sunde is a licensed clinical psychologist in Redding, California, specializing in PTSD treatment for combat veterans and first responders. He developed Platonomy, a therapeutic approach based on Plato’s constitutional psychology that identifies a four-part model of the psyche, including the overlooked fourth element of constitutional governance (auto politeia). Dr. Sunde created the SELF model and RULE process as practical frameworks for applying Platonic psychology in contemporary therapy. He published “Plato’s Super-Ego” in Philosophical Practice (2016) and his book Platonomy: Ancient Wisdom for the Modern Self was published on May 29, 2025 and is available through Amazon. His work demonstrates that Plato’s Republic is primarily a psychological rather than political work, offering timeless insights for modern mental health.

Correspondence: chetsunde@gmail.com