The Common Law [117]
has been reached by the courts on grounds of practical good sense, falls in with the true theory of contract under the common law.
The discussion of the nature of a promise has led me to analyze contract and the consequences of contract somewhat in advance of their place. I must say a word more concerning the facts which constitute a promise. It is laid down, with theoretical truth, that, besides the assurance or offer on the one side, there must be an acceptance on the other. But I find it hard to think of a case where a simple contract fails to be made, which could not be accounted for on other grounds, generally by the want of relation between assurance or offer and consideration as reciprocal inducements each of the other. Acceptance of an offer usually follows by mere implication from the furnishing of the consideration; and inasmuch as by our law an accepted offer, or promise, until the consideration is furnished, stands on no different footing from an offer not yet accepted, each being subject to revocation until that time, and each continuing [304] until then unless it has expired or has been revoked, the question of acceptance is rarely of practical importance.
Assuming that the general nature of consideration and promise is understood, some questions peculiar to bilateral contracts remain to be considered. These concern the sufficiency of the consideration and the moment when the contract is made.
A promise may be a consideration for a promise, although not every promise for every other. It may be doubted whether a promise to make a gift of one hundred dollars would be supported by a promise to accept it. But in a case of mutual promises respectively to transfer and to accept unpaid shares in a railway company, it has been held that a binding contract was made. Here one party agrees to part with something which may prove valuable, and the other to assume a liability which may prove onerous. /1/
But now suppose that there is no element of uncertainty except in the minds of the parties. Take, for instance, a wager on a past horse-race. It has been thought that this would amount to an absolute promise on one side, and no promise at all on the other. /2/ But this does not seem to me sound. Contracts are dealings between men, by which they make arrangements for the future. In making such arrangements the important thing is, not what is objectively true, but what the parties know. Any present fact which is unknown to the parties is just as uncertain for the purposes of making an arrangement at this moment, as any future fact. It is therefore a detriment to undertake to be ready to pay if the event turns out not [305] to have been as expected. This seems to be the true explanation why forbearance to sue upon a claim believed the plaintiff to be good is a sufficient consideration, although the claim was bad in fact, and known by the defendant to be bad. /1/ Were this view unsound, it is hard to see how wagers on any future event, except a miracle, could be sustained. For if the happening or not happening of the event is subject to the law of causation, the only uncertainty about it is in our foresight, not in its happening.
The question when a contract is made arises for the most part with regard to bilateral contracts by letter, the doubt being whether the contract is complete at the moment when the return promise is put into the post, or at the moment when it is received. If convenience preponderates in favor of either view, that is a sufficient reason for its adoption. So far as merely logical grounds go, the most ingenious argument in favor of the later moment is Professor Langdell's. According to him the conclusion follows from the fact that the consideration which makes the offer binding is itself a promise. Every promise, he says, is an offer before it is a promise, and the essence of an offer is that it should be communicated. /2/ But this reasoning seems unsound. When, as in the case supposed, the consideration for the return promise has been put into the power of the offeree and the return promise
The discussion of the nature of a promise has led me to analyze contract and the consequences of contract somewhat in advance of their place. I must say a word more concerning the facts which constitute a promise. It is laid down, with theoretical truth, that, besides the assurance or offer on the one side, there must be an acceptance on the other. But I find it hard to think of a case where a simple contract fails to be made, which could not be accounted for on other grounds, generally by the want of relation between assurance or offer and consideration as reciprocal inducements each of the other. Acceptance of an offer usually follows by mere implication from the furnishing of the consideration; and inasmuch as by our law an accepted offer, or promise, until the consideration is furnished, stands on no different footing from an offer not yet accepted, each being subject to revocation until that time, and each continuing [304] until then unless it has expired or has been revoked, the question of acceptance is rarely of practical importance.
Assuming that the general nature of consideration and promise is understood, some questions peculiar to bilateral contracts remain to be considered. These concern the sufficiency of the consideration and the moment when the contract is made.
A promise may be a consideration for a promise, although not every promise for every other. It may be doubted whether a promise to make a gift of one hundred dollars would be supported by a promise to accept it. But in a case of mutual promises respectively to transfer and to accept unpaid shares in a railway company, it has been held that a binding contract was made. Here one party agrees to part with something which may prove valuable, and the other to assume a liability which may prove onerous. /1/
But now suppose that there is no element of uncertainty except in the minds of the parties. Take, for instance, a wager on a past horse-race. It has been thought that this would amount to an absolute promise on one side, and no promise at all on the other. /2/ But this does not seem to me sound. Contracts are dealings between men, by which they make arrangements for the future. In making such arrangements the important thing is, not what is objectively true, but what the parties know. Any present fact which is unknown to the parties is just as uncertain for the purposes of making an arrangement at this moment, as any future fact. It is therefore a detriment to undertake to be ready to pay if the event turns out not [305] to have been as expected. This seems to be the true explanation why forbearance to sue upon a claim believed the plaintiff to be good is a sufficient consideration, although the claim was bad in fact, and known by the defendant to be bad. /1/ Were this view unsound, it is hard to see how wagers on any future event, except a miracle, could be sustained. For if the happening or not happening of the event is subject to the law of causation, the only uncertainty about it is in our foresight, not in its happening.
The question when a contract is made arises for the most part with regard to bilateral contracts by letter, the doubt being whether the contract is complete at the moment when the return promise is put into the post, or at the moment when it is received. If convenience preponderates in favor of either view, that is a sufficient reason for its adoption. So far as merely logical grounds go, the most ingenious argument in favor of the later moment is Professor Langdell's. According to him the conclusion follows from the fact that the consideration which makes the offer binding is itself a promise. Every promise, he says, is an offer before it is a promise, and the essence of an offer is that it should be communicated. /2/ But this reasoning seems unsound. When, as in the case supposed, the consideration for the return promise has been put into the power of the offeree and the return promise