A fortune crosses a death without crossing the boundary of the property it commands. The house remains standing, the bond continues to promise payment, and the shares retain their place in the company. What changes is the person entitled to receive, refuse, sell or wait. The heir acquires a position already assembled, often before any exercise of judgment has been required. That is the force of patrimony: the past reaches into the present through a title, giving one person a beginning that another must spend a working life approaching. The question of reward consequently changes hands with the asset. Whatever may justify the maker's fortune, the heir's receipt calls for an account of transmission as well as an account of creation.
Inheritance first changes the distribution of an existing stock. Suppose a parent leaves a house worth a hundred to a child who previously owned nothing. Ignoring expenses and any accompanying price change, the child gains a hundred and the estate releases a hundred. The community has the same house. The transfer can profoundly alter the child's security without adding a house to the community's resources. It can also preserve a productive business or an occupied home through a change of ownership. These consequences concern who receives the claim and how the underlying asset is used. Counting the inheritance as new production would obscure both: it would make a change in entitlement appear to have created the thing entitled to.
The amount crossing a generation is harder to measure than a list of wills suggests. Gifts made during life belong to the same inquiry, and a transfer received long ago may have been consumed, invested or enlarged. Piketty and Zucman's account distinguishes the annual flow of bequests and gifts from the part of today's wealth attributed to earlier transfers. The first asks what changes hands during a period. The second follows what remains, with choices about the treatment of returns. A person who inherited a home and saved the rent no longer paid is a particularly revealing case: the later saving is real, and its opportunity was partly supplied by the inheritance. The categories need to make that connection visible rather than award the same fortune wholly to thrift or wholly to descent.
Even a perfect account of those amounts would leave the justification of the transfer open. A gift can be defended as an exercise of the giver's freedom, an expression of affection, a reward for care, or a way to maintain something built over a lifetime. None of these defenses requires the recipient to have produced the gift. That is why the argument cannot be settled merely by observing that the heir did no work for it. The relevant claim may belong to the parent. But the converse is equally important: a parent's contribution does not become the child's contribution when the title changes. To call both fortunes earned conceals the very step that needs defending.
Mill placed that step inside his defense of property. He associated bequest with an owner's power to give, while distinguishing it from a relative's automatic succession when no disposition had been made. He also distinguished a child's claim to care and a fair start from a claim to be left rich. The distinctions permit affection, dependence and the giver's purposes to count without treating every possible inheritance rule as an unavoidable part of ownership. A system must still choose who succeeds, what claims have priority and how far a dead person's instructions govern people yet to live. The familiar forms of succession are answers to those questions, and their familiarity does not relieve them of the need for reasons.
The endurance of a dynasty depends on what happens to the fortune between transfers. Imagine a hundred held for thirty years, growing at a net two percent after the stipulated consumption and charges, then divided equally between two heirs. The total becomes about a hundred and eighty-one; each heir receives about ninety-one. The family stock has grown while the amount held by each successor has fallen. With four heirs, the amount per person falls further; with one, it rises. This is why a rate of return above the growth of the economy cannot, by itself, prove that every old fortune will tighten its hold. Spending, taxation, losses, family size and the division of ownership intervene between the return earned and the position transmitted.
A fortune can nevertheless reproduce a large advantage even when division reduces each heir's share. Suppose the two heirs in that example receive their ninety-one at the beginning of adult life while others begin with no net assets. A decline relative to the parent's hundred still leaves a reserve, collateral and the income the reserve can yield. Division within the dynasty is therefore different from equalization across society. Nor does the loss of one family's place at the top establish that access to the top has become independent of family. The identities of the largest owners, the proportion of wealth inherited, and the concentration of all holdings answer different questions. A society can become less dynastic in one of these senses while remaining unequal in another.
The date of a transfer also changes the opportunity it supplies. At a stipulated three-percent annual discount rate, a certain hundred arriving thirty years from now has a present value of about forty-one. The calculation prices a dated claim; it does not measure the whole difference between receiving help at twenty-five and receiving it at fifty-five. An early transfer may finance a qualification, a move or a period without earnings when those choices are available. A late one may provide retirement security after the earlier possibilities have passed. Borrowing against a promised inheritance could narrow the gap, but only if the promise is reliable and a lender will advance on acceptable terms. The calendar belongs to the distribution of advantage.
A policy directed at inheritance must therefore name which part of transmission it means to change. A charge on an estate, a limit on what one recipient can acquire, and a rule dividing property among children have different effects even when each is described as checking inherited wealth. A transfer of ten from a hundred-dollar estate to public recipients leaves ninety with the heir and ten elsewhere in a simple account. It does not make the house ten percent smaller. Its wider effects depend on how people save, give, value assets and use the revenue. The accounting establishes the immediate division; the behavioral and institutional questions determine what follows from it.
Mill's own proposal sought to spread comfortable independence rather than remove it. He favored limiting what one person might receive, and qualified the proposal where keeping an enterprise under suitable control mattered. His specific design was a historical argument, not an answer already fitted to every modern holding. Its enduring challenge is the distinction between providing security and founding a rank. A rule can protect a dependent, preserve a business and recognize a parent's affection while still asking how much inherited command over other people's possibilities one recipient should acquire. The burden is to describe the arrangement and its consequences, instead of treating all limits as hostility to family or all inheritances as a personal fault.
Patrimony exposes a weakness in any account that treats the size of a fortune as a sufficient certificate of merit. The same title may pass from an inventive founder to a diligent steward, from that steward to a careless heir, and later to a purchaser who paid full value. Its legal continuity does not give these people identical histories. Nor does a mixed history make the asset useless or every receipt illegitimate. It makes the inquiry more exacting: which contribution is being rewarded, whose choice is being protected, and which advantage is being renewed merely because the title has arrived intact? The inheritance is an event in that history, not a verdict on all of it.
A title can transmit an advantage without transmitting the achievement that first justified it.
The original question asks what becomes of reward when the sure route to a fortune runs through descent. The answer begins by keeping the maker and the heir distinct, then follows the actual terms on which the stock survives. A commonwealth can value the security parents seek for their children while refusing to treat unlimited inherited position as the child's accomplishment. What it chooses to preserve, divide or reach is the next question, taken up in The Levy. The argument remains open.