It must have been about his seventeenth year that Hume commenced, and abruptly relinquished the practical study of the law,--a curious episode in his history, which he thus describes in his "own life:" "My studious disposition, my sobriety, and my industry, gave my family a notion that the law was a proper profession for me; but I found an insurmountable aversion to every thing but the pursuits of philosophy and general learning; and while they fancied I was poring upon Voet and Vinnius, Cicero and Virgil were the authors which I was secretly devouring." But this by no means gives the reader a full and faithful impression of his motives. The passage calls up the vision of a contemplative, gentle, unambitious youth, shrinking from the arid labours that lead to wealth and distinction, and content to dream away his life in obscurity with the companionship of his favourite books. The document already referred to, and immediately to be quoted, shows that far other thoughts were in his mind; that he did not shrink from the professional labours of the bar, to sink into studious ease, but rejected them to encounter higher and more arduous toils--that he did not drop passively from the path of ambition opened to him, but deserted it for a higher and more adventurous course. He had indeed already before him the prospect of being a discoverer in philosophy, and his mind, crowded with the images of his new system, could see nothing else in life worthy of pursuit. Without this clue, Hume's aversion to the study of the law would have been a problem not to be easily solved. Had he lived in the present day, when the mass of statute and precedent that have accumulated even within the narrow domain of Scottish law, have completely precluded those luxurious digressions into the field of speculation and theory, which characterized the legal practice of our ancestors, one might readily comprehend the aversion of his fastidiously cultivated logical mind to such hard and coarse materials. But a lawyer's library, in his days, consisted of the classics, the philosophers of mind, and the civilians. The advocate often commenced his pleadings with a quotation from the young philosopher's favourite poet Virgil, and then digressed into a speculative inquiry into the general principles of law and government: the philosophical genius of Themis long soaring sublime, until at last, folding her wings, she rested on some vulgar question about dry multures or an irritancy of a tailzie, to the settlement of which the wide principles so announced were applied. Surely that science, within the boundaries of which the speculative spirit of Lord Kames had room for its flights, could not have been rejected on the ground that it cramped and restrained the faculty of generalizing.[28:1] Yet in a letter to Smith, of 12th April, 1759, which shows that Hume retained his antipathy to the study to an advanced period of his life, he says, "I am afraid of Kames' Law Tracts.