Page:An Enquiry Concerning Human Understanding - Hume (1748).djvu/252

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240
ESSAY XII.

nor soft, black nor white, is equally beyond the Reach of human Conception. Let any Man try to conceive a Triangle in general, which is neither Isoceles, nor Scalenum, nor has any particular Length nor Proportion of Sides; and he will soon perceive the Absurdity of all the scholastic Notions with regard to Abstraction and general Ideas[1].

Thus the first philosophical Objection to the Evidence of Sense or to the Opinion of external Existence consists in this, that such an Opinion, if rested on natural Instinct, is contrary to Reason, and if refer'd to Reason, is contrary to natural Instinct, and at the same time, carries no rational Evidence with it, to convince an impartial Enquirer. The second Objection goes farther, and represents this Opinion as con

  1. This Argument is drawn from Dr. Berkeley; and indeed most of the Writings of that ingenious Author form the best Lessons of Scepticism, which are to be found either among the antient or modern Philolophers, Bayle not excepted. He professes, however, in his Title-Page, and undoubtedly, with great Truth, to have compos'd his Book against the Sceptics as well as against the Atheists and Free-Thinkers. But that all his Arguments, tho' otherwise intended, are, in reality, merely sceptical, appears evidently from this, that they admit of no Answer and produce no Conviction. Their only Effect is to cause that momentary Amazement and Irresolution and Confusion, which is the Result of Scepticism.

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