Determinism and free will : new insights from physics philosophy and theology In this small book theoretical physicist Gerard t Hooft (Nobel prize 1999) philosopher Emanuele Severino (Lincei Academician) and theologian Piero Coda (Pontifical Lateran University) confront one another on a topic that lies at the roots of quantum mechanics and at the origin of Western thought: Determinism and Free Will. God does not play dice said Einstein a tenacious determinist. Quantum Mechanics and its clash with General Relativity have reanimated ancient dilemmas about chance and necessity: Is Nature deterministic Is Man free The “free will theorem” by Conway and Kochen and the deterministic interpretation of quantum mechanics proposed by t Hooft revive such philosophical questions in modern Physics. Is Becoming real Is the Elementary Event a product of the Case The cyclopean clash between Heraclitus and Parmenides has entered a new episode as evidenced by the essays in this volume Introduction (Fabio Scardigli) Free Will in the Theory of Everything (Gerard t Hooft) Phenomenology Freedom Causality and the Origin of Western Civilization (Emanuele Severino) Grace Freedom Relation (Piero Coda)