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CHAP. LXXVI.
The first and most useful Topick in Philoso∣phy, is the Moral part, which teaches Men their Duty; as for instance, That they should not lie: The second is the demon∣strative part, which gives us infallible proofs of it, and shews us evident Rea∣sons wherefore we ought not to lie: The Third is the distinguishing and argumen∣tative part, which instructs us what a Demonstration is, and how this in the case before us is one; What is a Conse∣quence? What a Contradiction? What is True, and what is False? Now from hence it is plain, that the last of these is subser∣vient to the second; that the second is sub∣ordinate to the first, and that the first is the most important and necessary point of all: That which all our Studies should be directed to, and wherein they should all center and rest at last. But we quite invert this Order. The third employs most of our Time and Pains, and the first is not thought worth either: So that by a strange Absurdity we commit the Crime, and at the same time value our selves ex∣ceedingly, for being able to demonstrate beyond all contradiction, that we ought not to do it.