In one period, the school may take its light and direction from active life; in another, it is true, the remains of an active spirit are greatly supported by literary monuments, and by the history of transactions that preserve the examples and the experience of former and of better times. But in whatever manner men are formed for great efforts of elocution or conduct, it appears the most glaring of all deceptions, to look for the accomplishments of a human character in the mere attainments of speculation, whilst we neglect the qualities of fortitude and public affection, which are so necessary to render our knowledge an article of happiness or of use. PART FOURTH. OF CONSEQUENCES THAT RESULT FROM THE ADVANCEMENT OF CIVIL AND COMMERCIAL ARTS. * * * * * SECTION I. OF THE SEPARATION OF ARTS AND PROFESSIONS. It is evident, that, however urged by a sense of necessity, and a desire of convenience, or favoured by any advantages of situation and policy, a people can make no great progress in cultivating the arts of life, until they have separated, and committed to different persons, the several tasks which require a peculiar skill and attention. The savage, or the barbarian, who must build and plant, and fabricate for himself, prefers, in the interval of great alarms and fatigues, the enjoyments of sloth to the improvement of his fortune: he is, perhaps, by the diversity of his wants, discouraged from industry; or, by his divided attention, prevented from acquiring skill in the management of any particular subject. The enjoyment of peace, however, and the prospect of being able to exchange one commodity for another, turns, by degrees, the hunter and the warrior into a tradesman and a merchant. The accidents which distribute the means of subsistence unequally, inclination, and favourable opportunities, assign the different occupations of men; and a sense of utility leads them, without end, to subdivide their professions. The artist finds, that the more he can confine his attention to a particular part of any work, his productions are the more perfect, and grow under his hands in the greater quantities. Every undertaker in manufacture finds, that the more he can subdivide the tasks of his workmen, and the more hands he can employ on separate articles, the more are his expenses diminished, and his profits increased. The consumer too requires, in every kind of commodity, a workmanship more perfect than hands employed on a variety of subjects can produce; and the progress of commerce is but a continued subdivision of the mechanical arts.