John Locke said private property arises because when we mix our labor with things, unowned things, we come to aquire a property right in those things.

约翰·洛克说，私有财产权之所以兴起,是因为我们将劳动付诸于无主的事物，所以取得了这些东西的产权。

耶鲁公开课 - 公正课程节选

There are some examples that can bring out the moral intuition that our labor can take something that is unowned and make it ours, though sometimes, there are disputes about this.

有些例子可以说明，在道德上,通过劳动能使无主物品成为我们的所有物，尽管有时，这一点颇具争议。

耶鲁公开课 - 公正课程节选