Summary

William Strong Dexter v. Hall — Opinion of the Court

But a lunatic, or a person non compos mentis, has nothing which the law recognizes as a mind, and it would seem, therefore, upon principle, that he cannot make a contract which may have any efficacy as such. He is not amenable to the criminal laws, because he is incapable of discriminating between that which is right and that which is wrong. The government does not hold him responsible for acts injurious to itself. Why, then, should one who has obtained from him that which purports to be a contract be permitted to hold him bound by its provisions, even until he may choose to avoid it?
Source: Wikisource

William Strong Dexter v. Hall — Opinion of the Court

A contract is made without any agreement of minds. And as it plainly requires the possession and exercise of reason quite as much to avoid a contract as to make it, the contract of a person without mind has the same effect as it would have had he been in full possession of ordinary understanding. While he continues insane he cannot avoid it; and if, therefore, it is operative until avoided, the law affords a lunatic no protection against himself.
Source: Wikisource

William Strong Dexter v. Hall — Opinion of the Court

It is his insanity that renders the act void. The commission may be prim a facie evidence of madness, sufficient to put one dealing with a lunatic upon his guard, and it might well be held that a commission issued was notice to all the world, and thereafter every act of a lunatic was void. But confinement within the walls of a madhouse, and chains, and uncontrollable frenzy, are notices equally clear and equally conclusive to every one doing business with such a lunatic, and shall he be bound by his acts because he has not the sanity required to procure the issuing of the commission?
Source: Wikisource

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