Note (return) — Chapter XII

"Of those habits which are about intellect by which we ascertain truth, some 712 are always true, but others 713 admit the false, as opinion and reasoning. But science and (pure) intellect are always true, and no other kind of knowledge, except intellect [intellectual intuition], is more accurate than science. And since the principles of demonstration are more known, and all science is connected with reason, there could not be a science of principles. But since nothing can be more true than science, except intellect, intellect will belong to principles. From these [considerations] it is evident that, as demonstration is not the principle of demonstration, so neither is science the principle of science. If, then, we have no other true genus (of habit) besides science, intellect will be the principle of science; it will also be the principle (or cause of the knowledge) of the principle."