Having returned to Scotland, he wrote at Ninewells his Essays, Moral and Philosophical (1741-42).  He now became desirous of finding some employment which would put him in a position of independence, and having been unsuccessful in his candidature for the Chair of Moral Philosophy in Edin., he became in 1745 governor to the Marquis of Annandale, a nobleman whose state was little removed from insanity.  Two years later he accepted the more congenial appointment of Judge-Advocate-General to General St. Clair on his expedition to Port L’Orient, and in 1748 accompanied him on a diplomatic mission to France, whence he passed on to Vienna and Turin.  About the same time he produced his Philosophical Essays (1748), including the famous Essay in Miracles which gave rise to so much controversy.  These were followed in 1751 by his Enquiry into the Principles of Morals, which he considered his best work; and in 1752 by his Political Discourses, which alone of his works had an immediate success.  In the same year he applied unsuccessfully for the Chair of Logic in Glasgow, but was appointed Keeper of the Advocates’ Library in Edin.  The access to books and original authorities which this position gave him appears to have suggested to his mind the idea of writing a history, and the first vol. of his History of England, containing the reigns of James I. and Charles I., was pub. in 1754.  Its reception was not favourable, and the disappointment of the author was so great that, had it not been for the state of war between the two countries, he would have left his native land, changed his name, and settled permanently in France.  The second vol., which appeared in 1757, dealing with the Commonwealth, and the reigns of Charles II. and James II., had a better reception, and had the effect of “buoying up its unfortunate brother.”  Thereafter the tide completely turned, and the remaining four vols., 1759 and 1762, in which he turned back and finished the history from the invasion of Julius Caesar to the accession of Henry VII., attained a vast popularity, which extended to the whole work.  During the progress of the history H. pub. in 1757 Four Dissertations:  the Natural History of Religion; of the Passions; of Tragedy; of the Standard of Taste.  Two others on Suicide and on The Immortality of the Soul were cancelled, but pub. posthumously.  In 1763 H. accompanied Lord Hertford to Paris, and for a few months acted as Charge d’Affaires.  While there he was introduced to the brilliant literary society for which the French capital was then famous.  Among other acquaintances which he made was that of Rousseau, whom he persuaded to accompany him on his return home, and for whom he procured a pension.  The suspicious and fickle character of R., however, soon brought the friendship to an end.  Soon after his return H. received a pension, and from 1767-68 he was under-sec. to General Conway, then Sec. of State.  In 1769 he retired, and returned to Edin. with an income of L1000 a year which, time and place considered, was an ample competence, and there he spent the remainder of his days, the recognised head of the intellectual and literary society of the city.