John Locke's Second Treatise of Government (1690)
"in which he argued that property rights are necessarily derived from labour. In working the land, one 'mixes one's labour' with it; in this way it becomes, in a sense, an extension of onesself. Lazy natives, according to Locke's disciples, didn't do that" [see separate notes, though, on indigenous land management]
"improving landlords"