Remembering, however, as I have already said, that the natural light is to be trusted only in so far as nothing to the contrary is revealed by God Hi… - René Descartes

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Remembering, however, as I have already said, that the natural light is to be
trusted only in so far as nothing to the contrary is revealed by God Himself. …
Moreover, it must be fixed in one's memory as the highest rule, that what has
been revealed to us by God is to be believed as the most certain of all things;
and even though the light of reason should seem most clearly to suggest
something else, we must nevertheless give creedence to the divine authority
only, rather than our own judgment. (Principia philosophiae, pars prima 28 and
76.)