Leibniz, in order to avoid both determinism and indifferentism, says that knowledge inclines the agent towards the best action without necessitating it. According to his modal theory, an action is contingent if the opposite is (logically) possible. The article examines the coherence of Leibniz’s notion of «inclining but not necessitating» in the context of contemporary philosophy of action, profiting from the distinction between reasons and causes. The kind of freedom which is possible according to Leibniz philosophy depends on this question.

An analysis of the particular kind of determinism that is to be found in the moral election according to Leibniz shows the model of practical reason held in his philosophy. The hermeneutical clue used in the article is to make a parallelism between the model of rationality of God’s election to create the best possible world and that of human moral election.