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

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

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

Every short statement about economics is misleading (with the possible exception of my present one).

Though a simple book can be written on selected topics, the central doctrines of economics are not simple and cannot be made so.

In the absence of any short term in common use to represent all desirable things, or things that satisfy human wants, we may use the term Goods for that purpose.

Material goods consist of useful material things, and of all rights to hold, or use, or derive benefits from material things, or to receive them at a future time.