1. Barnett, Z. (2019). Philosophy without belief. Mind, 128, 109–138.
2. Beebee, H. (2018). Philosophical scepticism and the aims of philosophy. The Aristotelian Society, CXVIII, 1–24.
3. Brennan, J. (2010). Scepticism about philosophy. Ratio, 23, 1–16.
4. Carnap, R. (1950). Empiricism, semantics and ontology. Revue Internationale De Philosophie, 4, 20–40. Reprinted in the Supplement to Meaning and Necessity: A Study in Semantics and Modal Logic, enlarged edition (University of Chicago Press, 1956).
5. Chalmers, D. (2015). Why Isn’t There More Progress in Philosophy? Philosophy, 90, 3–31.