As to the mental essence, we find it in infants devoid of every mental form. Then, later on in life, we find in it self-evident axiomatic mentally-grasped notions, without effort of learning and without reflection. So that the arising of them within it will not fail of being either through sense and experience, or else through divine outpouring reaching to it. But it is not licit to hold that the arising of such primary mental form will be through experience, seeing that experience does not afford and supply a necessary and inevitable judgment, since experience does not go so far as to believe or disbelieve definitively the existence of something different to the judgment drawn from what it has perceived. Indeed experience, although it shows us that every animal we perceive moves on chewing the lower jaw, yet it does not supply us with a convincing judgment that such is the case with every animal; for were this true, it would not be licit for the crocodile to exist which moves his upper jaw on chewing. Therefore not every judgment we have arrived at, as to things, through our sensuous perception, is applicable to and holds good of all that we have perceived or have not perceived of such things, but it may so be that what we have not perceived differ from what we have perceived. Whereas our conception that a whole is greater than a part is not [formed] because we have sensuously felt every part and every whole that are so related, seeing that even such an experience will not guaranty to us that there will be no whole and no part differently related.