books.google.com - Sec. 40. Nor is it so strange, as perhaps before consideration it may appear, that the property of labour should be able to over-balance the community of land: for it is labour indeed that puts the difference of value on every thing; and let any one consider what the difference is between an acre of...http://books.google.com/books/about/Two_Treatises_of_Government.html?id=z_lMTTx561MC&utm_source=gb-gplus-shareTwo Treatises of Government