The most valuable of all capital is that invested in human beings

Individual and national rights to wealth rest on the basis of civil and international law, or at least of custom that has the force of law.

Nature's action is complex: and nothing is gained in the long run by pretending that it is simple, and trying to describe it in a series of elementary propositions.

Political Economy or Economics is a study of mankind in the ordinary business of life.

In every age poets and social reformers have tried to stimulate the people of their own time to a nobler life by enchanting stories of the virtues of the heroes of old.

Capital is that part of wealth which is devoted to obtaining further wealth.

All labour is directed towards producing some effect.