The “individualistic” movement finds a classic expression in the great documents of the French Revolution, which at one stroke did away with all forms of association, leaving, in theory, the bare individual face to face with the state. It would hardly have reached this point, however, if it had not been for a second factor, which must be noted. A new scientific movement had been made possible by the invention and use of new mechanical appliances--the lens is typical--which focused attention upon tools like the lever and pendulum, which, although they had long been in use, had not formed points of departure for scientific theory. This new development in inquiry brought, as Bacon foretold, great economic changes in its wake. It more than paid its debt to tools by leading to the invention of machines. The use of machinery in production and commerce was followed by the creation of new powerful social conditions, personal opportunities and wants. Their adequate manifestation was limited by established political and legal practices. The legal regulations so affected every phase of life which was interested in taking advantage of the new economic agencies as to hamper and oppress the free play of manufacture and exchange. The established custom of states, expressed intellectually in the theory of mercantilism against which Adam Smith wrote his account of “The (True) Wealth of Nations,” prevented the expansion of trade between nations, a restriction which reacted to limit domestic industry. Internally, there was a network of restrictions inherited from feudalism. The prices of labor and staples were not framed in the market by higgling but were set by justices of the peace. The development of industry was hampered by laws regulating choice of a calling, apprenticeship, migration of workers from place to place,--and so on.