Machinery, and the importation of foreign commodities, certainly produce effects. These effects may be good or bad; on that there may be difference of opinion. But whatever view we take of them, it is reduced to a formula, by one of these two principles: Machinery is a good; or, machinery is an evil: Importations of foreign produce are beneficial; or, such importations are hurtful. But to assert that there are no principles, certainly exhibits the lowest degree of abasement to which the human mind can descend; and I confess that I blush for my country when I hear such a monstrous heresy proclaimed in the French Chambers, and with their assent; that is to say, in the face and with the assent of the _élite_ of our fellow-citizens; and this in order to justify their imposing laws upon us in total ignorance of the real state of the case. But then I am told to destroy the sophism, by proving that machinery is not hurtful to human labour, nor the importation of foreign products to national labour. A work like the present cannot well include very full or complete demonstrations. My design is rather to state difficulties than to resolve them; to excite reflection rather than to satisfy doubts. No conviction makes so lasting an impression on the mind as that which it works out for itself. But I shall endeavour nevertheless to put the reader on the right road. What misleads the adversaries of machinery and foreign importations is, that they judge of them by their immediate and transitory effects, instead of following them out to their general and definitive consequences. The immediate effect of the invention and employment of an ingenious machine is to render superfluous, for the attainment of a given result, a certain amount of manual labour. But its action does not stop there. For the very reason that the desired result is obtained with fewer efforts, the product is handed over to the public at a lower price; and the aggregate of savings thus realized by all purchasers, enables them to procure other satisfactions; that is to say, to encourage manual labour in general to exactly the extent of the manual labour which has been saved in the special branch of industry which has been recently improved. So that the level of labour has not fallen, while that of enjoyments has risen. Let us render this evident by an example.