As the invaluable present I am making to the world may not please all tastes, from the gravity of the matter, the solidity of the reasoning, and the deep learning contained in the ensuing sheets, it is necessary to make some apology for producing this work in so trifling an age, when nothing will go down but temporary politics, personal satire, and idle romances. The true reason then for my surmounting all these objections was singly this: I was apprehensive lest the work should be lost to posterity; and though it may be condemned at present, I can have no doubt but it will be treated with due reverence some hundred ages hence, when wisdom and learning shall have gained their proper ascendant over mankind, and when men shall only read for instruction and improvement of their minds.