Any personally held philosophy, religion, ideology, or worldview; a type of meme-complex, usually pertaining to a metaphysical or a-rational assumption of of how the universe works. Both secular religions, like atheism, Buddhism, and Platonic Materialism, and supernaturalist religions, like Christianity and Solarism, are examples of a belief-system.
Belief-Space - Text by Glenn Grant Since a person can only be infected with and transmit a finite number of memes, there is a limit to their belief space. Memes evolve in competition for niches in the belief-space of individuals and societies.