 We know that Malebranche’s doctrine of the vision in God conflicts with Descartes’ doctrine of the creation of the eternal truths. However, there are further departures from orthodox Cartesianism that are linked to two qualifications of this doctrine. The first qualification is that God’s idea of extension can reveal only the nature of bodies and not their existence. This qualification is not explicit in the initial edition of the Recherche, which says only that the existence of properties of bodies external to us is “very difficult to prove” (Malebranche [OC], 1:122). Foucher had objected that Malebranche has no good reason to affirm the external existence of these properties. In “Eclaircissement VI,” Malebranche urges that the idea of extension does reveal the possible existence of the material world, and that Descartes has shown that we have a probable argument for its actual existence deriving from our natural propensity to believe that there are bodies. However, he concedes in this text—without crediting Foucher—that neither he nor Descartes can provide an argument from reason that demonstrates “with evidence” or “with geometric rigor” that this belief is true. His conclusion is that such an argument must appeal to faith in the veracity of the report in the Scriptures that God has created the heavens and the earth.