Economics

Men did not make the earth. ... It is the value of the improvements only, and not the earth itself, that is individual property. ... Every proprietor owes to the community a ground rent for the land which he holds.

How is property given? By restraining liberty; that is, by taking it away so far as necessary for the purpose. How is your house made yours? By debarring every one else from the liberty of entering it without your leave.

Capitalism is the exploitation of man by man; Communism is the exact opposite.