Principles of Political Economyが好きなら

The appearance of a treatise like the present, on a subject on which so many works of merit already exist, may be thought to require some explanation. It might perhaps be sufficient to say, that no existing treatise on Political Ecomony contains the latest improvements which have been made in the theory of the subject. Many new ideas, and new applications of ideas, have been elicited by the discussions of the last fe…