Political economy, as a science, dates its origin, by the common consent of men, from the famous work "On the Nature and Causes of the _Wealth_ of Nations." But a greater authority than Adam Smith has told us, that "he that HASTENETH TO BE RICH SHALL NOT BE INNOCENT." Sismondi's doctrines on political economy are a commentary on these words, applied to the management of nations and the social concerns of man. It is in the fatal thirst for wealth, and the application of all the powers of knowledge, and all the resources of art, to _that single object_, that he sees the all-powerful cause, both of the present degradation of so many of the working classes, of the false direction of political philosophy, and of the spread of social evils, which will to all appearance, in the end prove fatal to the existence of the British empire, and of all the European communities. But it is not any general or vague declamation on the progress of corruption, and the growing evils of society, which he has brought forward; he has given a close and cogent chain of reasoning, supported by a formidable array of historical facts, and shown how it is that the evils have arisen--how they bear upon the condition of the great bulk of the people, how they degrade their character, how their habits corrupt their morals and destroy their happiness; and how irremediable, under the prevailing ideas of the influential classes in society, these evils have become. The social injustice and political delusions which, history has now clearly ascertained, were the causes of the ruin of the Roman empire, he sees re-appearing amidst us under different names, but in still more aggravated forms, and with more hopeless influences on society. All this he traces mainly to the ruinous pursuit of wealth, which has seized alike upon our philosophers, our statesmen, and our practical men; which has too fatally verified the saying of Scripture, that "the love of money is the root of all evil;" and converted the noble science of political economy, the end of which is "ut homines feliciter vivant," into the degrading handmaid of wealth.