It is hardly possible suddenly to introduce the smallest innovation into the political oeconomy of a state, let it be ever so reasonable, nay ever so profitable, without incurring some inconveniencies. A room cannot be swept without raising dust, one cannot walk abroad without dirtying one’s shoes; neither can a machine, which abridges the labour of men, be introduced _all at once_ into an extensive manufacture, without throwing many people into idleness. In treating every question of political oeconomy, I constantly suppose a statesman at the head of government, systematically conducting every part of it, so as to prevent the vicissitudes of manners, and innovations, from hurting any interest within the commonwealth, by their natural and immediate effects or consequences. When a house within a city becomes crazy, it is taken down; this I call systematical ruin: were it allowed to fall, the consequences might be fatal in many respects. In like manner, if a number of machines are all at once introduced into the manufactures of an industrious nation, (in consequence of that freedom which must necessarily be indulged to all sorts of improvement, and without which a state cannot thrive) it becomes the business of the statesman to interest himself so far in the consequences, as to provide a remedy for the inconveniencies resulting from the sudden alteration. It is farther his duty to make every exercise even of liberty and refinement an object of government and administration; not so as to discourage or to check them, but to prevent the revolution from affecting the interests of the different classes of the people, whose welfare he is particularly bound to take care of.