 It is best known for the ""Hypotheses non fingo"" ("I do not frame hypotheses") expression, which Newton used as a response to some of the criticism received after the release of the first edition (1687).In the essay Newton not only counters the natural philosophy of René Descartes and Gottfried Leibniz, but also addresses issues of scientific methodology, theology, and metaphysics.In the first paragraph of the General Scholium, Newton attacks René Descartes' model of the solar system.