When david hume began his History of England the undertaking came, not from any sudden resolve nor as an entirely new enterprise, but as one possibly contemplated thirteen years before, in 1739, probably attempted several times thereafter, and certainly considered, at least as a corollary discipline, in a philosophical discourse published in 1748. Even so, any concerted effort long sustained necessarily awaited appropriate conditions: all happily combining for Hume upon his election, January, 1752, as Keeper of the Advocates’ Library in Edinburgh. With this appointment the author finally had “a genteel-office,” ready access to a collection of some thirty thousand volumes, and, no less desirable, leisure indefinitely extended to pursue his research. Heretofore, by mere exertion of his own commanding intellect, philosopher Hume had more than once set forth what he perceived to be the “constant and universal principles of human nature.” Now, as a philosophical historian, he could ascertain from dreary chronicles all the aberrations of human behavior as there exhibited in “wars, intrigues, factions, and revolutions.” These and other vagaries, previously recorded simply as odd phenomena, in Hume’s more coherent view constituted a varied range of “materials” documenting the “science of man.”