Meta Ontology

Truthmaking and the Slingshot

Wittgenstein on the Substance of the World

From Russell's Paradox to the Theory of Judgement: Wittgenstein and Russell on the Unity of the Proposition

Naturalness and Arbitrariness

Existence, Proof and Truth-Making: A Perspective on the Intuitionistic Conception of Truth

Facts and Universals: Besprechungsaufsatz Zu: Herbert Hochberg, Russell, Moore and Wittgenstein: The Revival of Realism. Frankfurt, A. M.: H\"ansel-Hohenhausen, 2001

Wittgenstein's Nonsense Objection to Russell's Theory of Judgment

Metaphysics

Wittgenstein and the Problem of Universals