[whswhs]

This is a departure from the original topic of this thread, I think, but it occurs to me that three of the powers in GURPS Powers: The Weird are based on philosophical concepts: Logos, Noumena, and Void. Logos is about the idea of a primal true language; Noumena is about access to a realm that transcends the illusions and distortions of the senses, as in Plato or Kant; Void is about the idea of nonexistence as a power independent of and opposed to existence—the Manichean rather than the Boethian view of evil.