Abstract
The German philosopher Franz Brentano develops his personal thinking by harmonising his favourite sources: Aristotle, Thomas Aquinas and Leibniz. However, he also goes beyond them, introducing a determinism foreign to Thomas Aquinas and eliminating divine punishments from the future life, thus departing from the Christian position also held by Leibniz. Aristotle is credited with Brentano’s Leibnizian ideas: his God is the author of the best of all possible worlds and, within a deterministic paradigm, leads all souls to immortal happiness.