Full Idea
Reason requires that we avoid multiplying hypotheses or principles, in somewhat the same way that the simplest system is always preferred in astronomy.
Gist of Idea
Reason avoids multiplying hypotheses or principles
Source
Gottfried Leibniz (Discourse on Metaphysics [1686], 5)
Book Reference
Leibniz,Gottfried: 'Philosophical Essays', ed/tr. Arlew,R /Garber,D [Hackett 1989], p.39
A Reaction
He offers this principle without mentioning Ockham, as if it were self-evident.