Christian theology is monotheistic, but the idea of the trinity problematises this: how can there be one god, but also Father, Son, and Spirit? Jc Beall provides a simple but logically rigorous solution, arguing that the apparent contradictions of the trinity cannot be rejected without thereby rejecting fundamental truths of divine reality.

Jc Beall is widely known for work in logic and the philosophy of logic, particularly nonclassical logic. Beall holds the O'Neill Family Chair in Philosophy at the University of Notre Dame, and he is an Honorary Professor of Philosophy at the University of Sydney. In 2022 Beall was a Global Fellow in Philosophy and Divinity at the University of St Andrews. Prior to Notre Dame, Beall was a Distinguished Professor of Philosophy at the University of Connecticut.

• 1: Aim, scope, limits, and main thesis


• 2: Logical and extra-logical entailment


• 3: Trinitarian identity


• 4: Seven virtues


• 5: Seven objections


• 6: Measuring some non-contradictory accounts


• 7: Towards future contradictory theology


• Appendix A Athanasian Creed (tr. Philip-Neri Reese, O.P.)


• Appendix B §2 Appendix: formal sketch of FDE