The first of these is, That those Notions, or Ideas of Vertue, and consequent Rules of Action, which are usually given to such young Persons, do rarely carry along with them an entire conviction of their Truth and Reasonableness: Whence if these Instructions at any time happen strongly to cross the Inclinations of those to whom they are given, it will appear rational to question their Solidity: And when Principles that thwart People's passions or interests, come once to be doubted of by them, it is great odds, that they will sooner be slighted, than better examin'd. Now, this want of apparent Truth and Reasonableness, is not only where the _Notions_ and _Precepts_ giv'n, are in themselves such as either in Whole, or in Part, are not True or Rational; but also (oftentimes) where they are altogether conformable to right Reason: In which cases, the want of apparent Reasonableness, proceeds from a defect of such Antecedent Knowledge in those who are design'd to be instructed, as is necessary to the seeing their Reasonableness of the Instructions giv'n them; that is to say, To their discerning the conformity with, or evident deduction of such Instructions from some Truths which are unquestion'd by them: the which should be the Principles of True Religion, so clearly made out to them, as to be by them acknowledg'd for Verities. Religion being (as I shall take it at present for granted) the only sufficient ground or solid support of Vertue; For the belief of a Superior, Omnipotent Being, inspecting our Actions, and who will Reward or Punish us accordingly, is in all Men's Apprehensions the strangest, and in truth the only stable and irresistible Argument for submitting our Desires to a constant Regulation, wherein it is that Vertue does consist.