Full Idea
Unlike most philosophers prior to the twentieth century, Leibniz was committed to the causal completeness of physics.
Gist of Idea
Leibniz had an unusual commitment to the causal completeness of physics
Source
report of Gottfried Leibniz (works [1690]) by David Papineau - Thinking about Consciousness 1.4
Book Reference
Papineau,David: 'Thinking about Consciousness' [OUP 2004], p.22
A Reaction
It has been suggested that Leibniz was actually, in private, a determinist (see Idea 7841), which would fit. Leibniz is enigmatic, but he may have proposed the closure of physics to glorify God, only to find that God was beginning to look irrelevant.
Related Idea
Idea 7841 We think we are free because the causes of the will are unknown; determinism is a false problem [Leibniz]