§ I . Philosophy being nothing else but the study of wisdom and truth, it may with reason be expected, that those who have spent most time and pains in it shou’d enjoy a greater calm and serenity of mind, a greater clearness and evidence of knowlege, and be less disturb’d with doubts and difficulties than other men. Yet so it is, we see the illiterate bulk of mankind that walk the high-road of plain, common sense, and are govern’d by the dictates of nature, for the most part easy and undisturb’d. To them nothing that’s familiar appears unaccountable or difficult to comprehend. They complain not of any want of evidence in their senses, and are out of all danger of becoming sceptics. But no sooner do we depart from sense and instinct to follow the light of a superior principle, to reason, meditate and reflect on the nature of things, but a thousand scruples spring up in our minds, concerning those things which before we seem’d fully to comprehend. Prejudices and errors of sense do from all parts discover themselves to our view ; and endeavouring to correct these by reason we are insensibly drawn into uncouth paradoxes, difficulties, and inconsistences, which multiply and grow upon us as we advance in speculation ; till at length, having wander’d thro’ many intricate mazes, we find our selves just where we were, or, which is worse, sit down in a forelom scepticism.