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506 number of those that are so; or to believe some and disbelieve others on account of the equipoise, we are led to scepticism.

But among the principal causes of scepticism is the instability of the mind, which is productive of dissent. And dissent is the proximate cause of doubt. Whence life is full of tribunals and councils; and, in fine, of selection in what is said to be good and bad; which are the signs of a mind in doubt, and halting through feebleness, on account of conflicting matters. And there are libraries full of books, and compilations and treatises of those who differ in dogmas, and are confident that they themselves know the truth that there is in things.

language there are three things:—Names, which are primarily the symbols of conceptions, and by consequence also of subjects. Second, there are Conceptions, which are the likenesses and impressions of the subjects. Whence in all, the conceptions are the same; in consequence of the same impression being produced by the subjects in all. But the names are not so, on account of the difference of languages. And thirdly, the Subject-matters by which the Conceptions are impressed in us.

The Names are reduced by grammar into the twenty-four general elements; for the elements must be determined. For of Particulars there is no scientific knowledge, seeing they are infinite. But it is the property of science to rest on general and defined principles. Whence also Particulars are resolved into Universals. And philosophic research is occupied with Conceptions and Real subjects. But since of these the Particulars are infinite, some elements have been found, under which every subject of investigation is brought; and if it be shown to enter into any one or more of the elements, we prove it to exist; but if it escape them all, that it does not exist.