4. For Jack to _own_, have a thing for Jack's _own_, Jack must by his _own_ force have subdued Nature, must have taken the thing by moving the thing's atoms, or moving something relatively to the thing, or, negatively, by not evading, but accepting, the thing in motion--a wind, tide, light-wave; else Jack must have taken something (by as much work) to purchase the thing from its (true) owner, or accepted it as a favour from Nature in motion, or from its (true) owner. To say “own” is to say “take”; to say “take” is to say “motion”, i.e., the doing of work: “work done” being FD, i.e., Force used into Distance moved-over. I cannot own the air: it is no good; I own the air in my lungs, having taken, moved, it, done FD on it: it is very good; and I own the air which, doing FD, moving to my face, I do not evade, but accept, take: it is very good. I say to Jack “take a cigar”; he loudly says “yes!”, but does not move it to his mouth, nor moves his mouth to it; instead, he moves a pen to his mouth; this makes me laugh: he has not taken a cigar. Jack is catching fish in a boat; Tom owns the boat: so Jack gives fish to Tom, until Jack's FD done on the fish is equivalent to Tom's FD done on the boat; and now Jack owns the boat. If “the law” says that Tom still owns the boat, this makes me laugh: for how can Tom come to own two boats' good by the FD done on one only? Jack is ploughing the sea with a ship: just there he owns the sea, has taken, is moving, it for his good. He does not own the sea before, nor the sea behind, him: for the motions behind made by him have ceased to do good. Jack is ploughing soil: he owns the soil ploughed, has taken it, and will own it while the motions he has made do good: so that, if Tom who has not moved it says “I own the soil, for 'the law' declares that I have taken it by moving a pen two inches”, this makes me laugh. Or, if Jack says “I own it for ever”, this makes me laugh. Or, if anyone says “I own both the soil and the site” (relative position), this makes me laugh: for what can one man move to make a relative position good? He can neither move a field toward anything nor move much toward a field. If many men move railways that way, or move things to rear towns round the field, this makes the site good, moving it from outside a community to inside a community; and the many who make it good own it. 5. The site is the field's chief good: so the plougher owes something to those who, making it good, own it, This something is named “rent”. 6. Suppose that the plougher, or dweller-on, is an Englishman: he owes rent to the English. And, since the site of England is made good by movements made in America, he owes rent to the Americans. 7. This the mind readily descries to be true: it is a “truism”, and is necessarily the Fundamental Principle of Society throughout the universe. So that, summing up, we may define: “Rent” is “right”, based on truth when paid to those by whose movements a site is made good.