5th. That they dwell much and long on the contemplation of the supremely perfect Being, and, among other things, consider that in the ideas of all other natures, possible existence is indeed contained, but that in the idea of God is contained not only possible but absolutely necessary existence. For, from this alone, and without any reasoning, they will discover that God exists: and it will be no less evident in itself than that two is an equal and three an unequal number, with other truths of this sort. For there are certain truths that are thus manifest to some without proof, which are not comprehended by others without a process of reasoning.

6th. That carefully considering all the examples of clear and distinct perception, and all of obscure and confused, of which I spoke in my Meditations, they accustom themselves to distinguish things that are clearly known from those that are obscure, for this is better learnt by example than by rules; and I think that I have there opened up, or at least in some degree touched upon, all examples of this kind.