Slavery was regarded by Aristotle as an ordinance of nature, and so probably was it by the slaves themselves in olden time.

The most reckless and treacherous of all theorists is he who professes to let facts and figures speak for themselves.

Producer's Surplus is a convenient name for the genus of which the rent of land is the leading species.

In common use almost every word has many shades of meaning, and therefore needs to be interpreted by the context.

All wealth consists of desirable things; that is, things which satisfy human wants directly or indirectly: but not all desirable things are reckoned as wealth.

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.

The hope that poverty and ignorance may gradually be extinguished derives indeed much support from the steady progress of the working classes during the 19th century.