The advance does not consist in the substitution by Leibnitz of one single miracle at creation for a number of isolated and continually recurring ones, but (as Leibnitz himself remarks, in reply to the objection expressed by Father Lami, that a perpetual miracle is no miracle) in the exchange of the immediate causality of God for natural causation.

Here is creation in its first intention, here is causality at work.

The principle of the complete causal determination of events retains its validity unimpeached for the sphere of the knowledge of the understanding, that is, for the realm of phenomena; while, on the other hand, it remains permissible for us to postulate another kind of causality for the realm of things in themselves, although we can have no idea of its how, and to ascribe to ourselves a free intelligible character.