Since then though the knowledge of a God be the most natural discovery of human reason, yet the idea of him is not innate, as I think is evident from what has been said; I imagine there will be scarce any other idea found that can pretend to it. Since if God hath set any impression, any character, on the understanding of men, it is most reasonable to expect it should have been some clear and uniform idea of Himself; as far as our weak capacities were capable to receive so incomprehensible and infinite an object. But our minds being at first void of that idea which we are most concerned to have, it is a strong presumption against all other innate characters. I must own, as far as I can observe, I can find none, and would be glad to be informed by any other. 19. Idea of Substance not innate. I confess there is another idea which would be of general use for mankind to have, as it is of general talk as if they had it; and that is the idea of SUBSTANCE; which we neither have nor can have by sensation or reflection. If nature took care to provide us any ideas, we might well expect they should be such as by our own faculties we cannot procure to ourselves; but we see, on the contrary, that since, by those ways whereby other ideas are brought into our minds, this is not, we have no such clear idea at all; and therefore signify nothing by the word SUBSTANCE but only an uncertain supposition of we know not what, i. e. of something whereof we have no idea, which we take to be the substratum, or support, of those ideas we do know. 20. No Propositions can be innate, since no Ideas are innate.