Then there is the problem of how it can be possible for a finite mind to have a clear and distinct idea of an infinite God. Descartes was challenged on this and in the first set of Replies says, "the infinite, qua infinite, can in no way be grasped. But it can still be understood, in so far as we can clearly and distinctly understand that something is such that no limitations can be found in it, and this amounts to understanding clearly that it is infinite."
Then the question arises of how a finite mind can have a clear and distinct comprehension of an endless deity. Descartes faced this challenge, and in his first set of Rebuttals, he posited that "the infinite, by its own nature, cannot be grasped. However, it may still be comprehended, to the extent that we can clearly and distinctly realize that something exists without any limitations or bounds, which essentially means understanding clearly that it is infinite."