Plato (c. 427–347 BCE) held that the world of the senses is changeable and can only be imperfectly understood, while Forms or Ideas make up a more stable and intelligible level of reality. The soul and knowledge therefore play a role that does not reduce to sense data; he is a philosophical forerunner, not the originator of a modern theory of consciousness.
Source: ChatGPT 5.6 Sol, Sunday, August 23, 2026, 4:17 a.m.