What is the Lockean Proviso?
Here is Locke’s essential statement, from Chapter 5, “On Property”:
Sec. 27: Though the earth, and all inferior creatures, be common to all men, yet every man has a property in his own person: this no body has any right to but himself. The labour of his body, and the work of his hands, we may say, are properly his. Whatsoever then he removes out of the state that nature hath provided, and left it in, he hath mixed his labour with, and joined to it something that is his own, and thereby makes it his property. It being by him removed from the common state nature hath placed it in, it hath by this labour something annexed to it, that excludes the common right of other men: for this labour being the unquestionable property of the labourer, no man but he can have a right to what that is once joined to, at least where there is enough, and as good, left in common to others.
This emphasized text is called “The Lockean Proviso,” and Locke makes reference to it no less than 15 times in 28 paragraphs. (It is actually one of two provisos, the other being that taking up land and wasting it makes one a “spoiler of the commons” and vitiates his claim. Some neolibertarians do recognize this lesser proviso, which got far less attention from Locke.)
Most neolibertarians who cite Locke are oblivious to his main proviso, and those who begrudgingly acknowledge it try to reduce it to a meaningless absurdity by saying there most only be enough left to others at the time of the claiming.
Well, of course there is enough left to others at that time, or else someone else would have already claimed it. If that is all that Locke had meant, then he was dwelling on a meaningless triviality. However, an honest reading of Locke shows that he meant that his proviso continues to apply long after the claim, and Locke gives an example that clarifies this.
Sec. 34. God gave the world to men in common; but since he gave it them for their benefit, and the greatest conveniencies of life they were capable to draw from it, it cannot be supposed he meant it should always remain common and uncultivated. He gave it to the use of the industrious and rational, (and labour was to be his title to it;) not to the fancy or covetousness of the quarrelsome and contentious. He that had as good left for his improvement, as was already taken up, needed not complain, ought not to meddle with what was already improved by another’s labour: if he did, it is plain he desired the benefit of another’s pains, which he had no right to, and not the ground which God had given him in common with others to labour on, and whereof there was as good left, as that already possessed, and more than he knew what to do with, or his industry could reach to.
Here Locke clearly applies his proviso to land that has already been taken up, and says that the rival claimant should be denied because “there was [still] as good left, as that already possessed.”
In Sections 45-51, Locke acknowledges that this system (which was, in fact, the prevailing system under ancient Common Law) worked well enough until population growth made land scarce, and the use of money taught people that they could hold land in order that others would pay them to use that land, or would work on that land for the landholder’s benefit, which amounts to the same thing.
[Prior to the use of money] what reason could any one have there to enlarge his possessions beyond the use of his family, and a plentiful supply to its consumption, either in what their own industry produced, or they could barter for like perishable, useful commodities, with others? Where there is not some thing, both lasting and scarce, and so valuable to be hoarded up, there men will not be apt to enlarge their possessions of land, were it never so rich, never so free for them to take:...
That is, the homestead principle works fine prior to money, because nobody would rush to take up land in order charge others to work that land. However, with money, or what we would call a monetary economy, people will naturally take up more land and better land than they need, in order that someone else will pay them to let go of it. This is precisely where the Lockean Proviso becomes violated, and is also precisely where rent arises.
Speak Liberty NOW: OPINION: The single tax, a breakdown from an authority on Georgism
Also:
Wikipedia: Lockean Proviso
Wikipedia: Labor Theory of Property (or of Appropriation)