 Anselm, Saint [Anselm of Bec, Anselm of Canterbury] |  a priori justification and knowledge |  Descartes, René |  existence |  God: and other ultimates |  Gödel, Kurt |  Hegel, Georg Wilhelm Friedrich |  Kant, Immanuel |  logic: informal |  logic: modal |  Meinong, Alexius 