Platonism

Philosophical system

Platonism is the philosophy of Plato and philosophical systems closely derived from it, considered the opposite of nominalism, or anti-realism. Platonism has had a profound influence on Western thought. Platonism or Platonic realism affirms the real existence of forms or abstract objects, originally to solve the problem of universals.

From Wikipedia, under CC BY-SA. More on occurri.