Sentence:  Judicious Reader, THOU "may'st (peradventure) no less wonder at the strangeness of the Paradox, than at the publication hereof in an" English "Dialect, and the rather because it is no vulgar Theme [...]: Yet, by the way, let me advise thee to suspend thy censures, (which at first view, 'tis probable, thou may'st be subject to entertain,) as supposing the Doctrine herein asserted more easily <WSD>oppugnable</WSD> than indeed it is) till thou hast passed a serious examination on all the particulars herein insisted upon: For" Aliquando mens cogitat quæ ratio non probat. 
Meaning of the word marked with <WSD> tags:  (rare) Disputable, contestable, refutable, capable of being oppugned.