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dcavdut to enslave, jor force .their. Opinions,’with a certain Air of Authority, and someElocution, upon the rest of Mankind : Hence*proceeds the Difficulty of .establishing a"solid Theory, and just Practice • hence itis, that no advantageous Scholia are drawn.stoq.1 their Experiments; for. what theydaily put in Execution, they know not theReason why it should be so ; but the irra-tional, are continually opposing the Intro-',diction of a regular Science, jye'll know-ing, what fatal Effects such an Introduction\yould. produce to their Schemes; though,without such a Support, all that they assertupon a Trial, os in. what hy Experiencethey have sound to siicceed, whether whatthey do happens right or wrong,, turns outproffiahle or unprofitable, they cannot ac-count for ; all that they can. fay in eitherCafe amounts in effect to no more, thanthatithas happened so: But such is the Infa-tuation, of some Men’s Minds, and so slendertlieir Application to Knowledge' of thisAct, that they seem,, by these unsound Pro-ceedings^to be lulled as it were asleep ; butif the Rules, whose certainty our Sciencectursp justly boast of, were once known,ahd'brought into a regular fcientifical Or-der, the Spirit of Empirism, which nowreigns, would undoubtedly be thrown offand rejected by the Proprietors; thenwould they be awakened out of their Le-thargy ;