Of this essay, Dugald Stewart remarks, 'that whatever opinion we may entertain of the justness of its conclusions, it must be allowed to be a singular effort of invention, ingenuity, and subtilty; that it contains a large mixture of important truth, and has had the merit of directing the attention of philosophers to a view of human nature, which had formerly in a great measure escaped their notice; and no work, undoubtedly, can be mentioned, ancient or modern, which exhibits so complete a view of those facts with respect to our moral perceptions, which it is one great object of this branch of science to refer to their general laws; and well deserves the careful study of all whose taste leads them to prosecute similar enquiries. These facts are presented in the most happy and beautiful lights; and when the subject leads him to address the imagination and the heart, the variety and felicity of his illustrations, the richness and fluency of his eloquence; and the skill with which he wins the attention and commands the passions of his readers, leave him, among our English moralists, without a rival. Towards the close of 1763, Mr. Smith arranged to visit the continent with the Duke of Buccleugh, returning to London in 1766. For the next ten years he lived quietly with his mother at Kirkaldy; and in 1776, accounted to the world for his long retreat, by the publication of his 'INQUIRY INTO THE NATURE AND CAUSES OF THE WEALTH OF NATIONS.' In 1778, Mr. Smith was appointed a Commissioner of Customs in Scotland, the pecuniary emoluments of which were considerable. In 1784, he lost his mother. In 1788, his cousin, Miss Douglass, died, to whom he had been strongly attached; and in July, 1790, he died, having, a short while before, in conversation with his friend Riddell, regretted that 'HE HAD DONE SO LITTLE.' [Above biographic notes and literary opinions have been abridged from a paper on 'The Life and Writings of Adam Smith,' by Professor Dugald Stewart, of Edinburgh, 1793--A. M.] ADVERTISEMENT TO THE SIXTH EDITION. -----