Endnote 6. (1) We doubt of the existence of God, and consequently of
all else, so long as we have no clear and distinct idea of God, but only a
confused one. (2) For as he who knows not rightly the nature of a triangle,
knows not that its three angles are equal to two right angles, so he who
conceives the Divine nature confusedly, does not see that it pertains to the
nature of God to exist. (3) Now, to conceive the nature of God clearly and
distinctly, it is necessary to pay attention to a certain number of very
simple notions, called general notions, and by their help to associate the
conceptions which we form of the attributes of the Divine nature. (4) It
then, for the first time, becomes clear to us, that God exists necessarily,
that He is omnipresent, and that all our conceptions involve in themselves
the nature of God and are conceived through it. (5) Lastly, we see that all
our adequate ideas are true. (6) Compare on this point the prolegomena to
book, "Principles of Descartes's philosophy set forth geometrically."