General,   Handbooks, Companions and General Introductions,   Anthologies,   Ideas of Ontology and Metaphysics,   Currents within Metaphysics,   Metaontology,  

State of Affairs and Facts,   Universals, Abstract Objects, Transcendentals,   Modalities and Possible Worlds,   Time,   Identity and Change ,   Existence and Non-Existence,  

Augustine,   Thomas Aquinas,