Social reformers and legislators will never be economists, and they…

the custom will grow up of estimating the marginal significance of things in terms of the generally accepted article even when the article does not pass from hand to hand in exchanges

even "waiting" requires money

Thus each is making what some one else wants in order to get what he wants himself.

any article which is well known to be valued by a large and easily accessible class of persons may be taken habitually in exchange for valued commodities, although those who take it do not want it for their own use, and it does not, on its …

the study of Political Economy would be the study of the principles on which the resources of a community should be so regulated and administered as to secure the communal ends without waste.

In fact, a man can be neither a saint, nor a lover, nor a poet, unless he has comparatively recently had something to eat.