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affairs of individuals at the pleasure of government, but giving effect to their own expressed desire. Let us acquiesce in this enlargement of the restrictive theory, and take it for what it is worth. But governments do not limit their concern with contracts to a simple enforcement. They take upon themselves to determine what contracts are fit to be enforced. It is not enough that one person, not being either cheated or compelled, makes a promise to another. There are promises by which it is not for the public good that persons should have the power of binding themselves. To say nothing of engagements to do something contrary to law, there are engagements which the law refuses to enforce, for reasons connected with the interest of the promiser, or with the general policy of the state. A contract by which a person sells himself to another as a slave, would be declared void by the tribunals of this and of most other European countries. There are few nations whose laws enforce a contract for what is looked upon as prostitution, or any matrimonial engagement of which the conditions vary in any respect from those which the law has thought fit to prescribe. But when once it is admitted that there are any engagements which for reasons of expediency the law ought not to enforce, the same question is necessarily opened with respect to all engagements. Whether, for example, the law should enforce a contract to labour, when the wages are too low or the hours of work too severe: whether it should enforce a contract by which a person binds himself to remain, for more than a very limited period, in the service of a given individual: whether a contract of marriage, entered into for life, should continue to be enforced against the deliberate will of the persons, or of either of the persons, who entered into it. Every question which can possibly arise as to the policy of contracts, and of the relations which they establish among human beings, is a question for the legislator; and one which he cannot escape from considering, and in some way or other deciding.