<philosophical terminology> what logically or causally secures the occurrence of something else; see necessary / sufficient. Thus, Leibniz supposed that there must always be a sufficient reason for the way things are.
[A Dictionary of Philosophical Terms and Names]
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<logic, universal causation (law of), metaphysics> <determinism> principle formulated by Leibniz according to which, for whatever is the case, there is a sufficient reason why it is the case. Closely akin to this is the Law of Universal Causation, according to which every event has a cause. See also: Determinism.
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