Chapter 12

With increasing pressure of the social interest in the security of transactions through economic development and commercial expansion, the natural-law philosophy slowly affected this simple scheme of formal undertakings legally recognized and enforceable and informal undertakings of only moral efficacy, and brought about the complicated system of enforceable undertakings in the maturity of Roman law with which you are familiar. Four features of this movement are noteworthy. In the first place it led to a juristic theory of formal contract which has affected our ideas ever since. In the strict law the source of obligation was in the form itself. For in primitive thinking forms have an intrinsic efficacy. It has often been pointed out that the faith in legal forms belongs to the same order of thought as faith in forms of incantation and that legal forms are frequently symbols to be classed psychologically with the symbols of magic. The stage of equity and natural law, relying on reason rather than on form, governed by philosophy instead of by naïve faith, looked for the substance and found it in a pact preceding and presupposed by the formal ceremony. Thus a formal contract was a pact with the addition of legal form. The pact was the substance of the transaction. The form was a _causa ciuilis_ or legal reason for enforcing the pact. But if the form was only a legal reason for enforcing something that got its natural efficacy in another way, it followed that there might well be other legal reasons for enforcement besides form. Consequently new categories of contract were added to the old formal contracts and it is significant that while the latter were transactions _stricti iuris_ the former were considered transactions _bonae fidei_ involving liability to what good faith demanded in view of what had been done. In the scope of their obligation these contracts responded exactly to the postulate of civilized society that those with whom we deal will act in good faith and will carry out their undertakings according to the expectations of the community. On the other hand the old formal contracts responded thereto in part only since their obligation was one to do exactly what the terms of the form called for, no more and no less. When one makes _nexum_, said the Twelve Tables, as he says orally so be the law. New categories were added in successive strata, as it were, and juristic science sought afterward to reduce them to system and logical consistency. Thus real contracts, consensual contracts and innominate contracts were added. But it is evident that many of these are juristic rationalizings of what had been done for a long time through formal transactions. Thus the consensual contract of sale with its implied warranties rationalizes transfer by _traditio_ with stipulations for the price and for warranties. The real contract of _depositum_ rationalizes _fiducia cum amico_. The real contract of _mutuum_ rationalizes _pecunia credita_. But the latter was so thoroughly established as a formal transaction that the case of a loan of money, analytically a real contract, preserved the incidents of the strict law. Moreover certain pacts, _pacta adiecta_, _pacta praetoria_, became actionable which do not fit into the analytical scheme of the Institutes. For example, a _causa_ or reason for enforcing these pacts was found in their being incidental to something else or in a pre-existing natural obligation which they undertook to satisfy. There still remained natural obligations which had not been given legal efficacy as the basis of actions. The mere will of the person who undertook or the claim of the promisee was not a reason for enforcing. Yet in reason they were morally binding and the legal and moral should coincide. Hence they might be used defensively or as the basis of a set-off. Meanwhile the forms of stipulation and of literal contract had been reduced to their lowest terms by conceiving them in terms of substance, and taking orally expressed agreement to be the substance of the one and writing to be the substance of the other. The results have defied analysis although the best that juristic ingenuity could do has been expended upon them for centuries.

In the Middle Ages primitive ideas came back for a time through Germanic law. General security in its lowest terms of peace and order was the pressing social interest. There was little commercial activity. The civilization of the time did not involve the corollaries of our jural postulate. Religiously sanctioned undertakings by promissory oath and real transactions of pledge of person or property and of exchange gave rise to a simple system of formal undertakings. Out of these came a theory of _causa debendi_, or reason for owing the promised performance, which has had a profound influence upon subsequent thinking. The Roman _causa ciuilis_ was a legal reason for enforcing a pact. Under the influence of the Germanic idea _causa_ becomes a reason for making the pact, the good reason for making it furnishing a sufficient reason for enforcing it. For a time it seemed that the church might succeed in establishing a jurisdiction over promises. Oaths and vows involved religious duties and might well be claimed as the province of the spiritual. But the moral obligation of pacts, binding the conscience of a Christian, might also be cognizable by a zealous corrector of the conduct of the faithful for their soul's welfare. Had not the power of the canon law broken down and the law of the state developed rapidly in respect of the security of transactions after the sixteenth century, the law of contracts might have grown along religious instead of along philosophical lines, and perhaps not to its advantage. As it is, one need but read Doctor and Student with the title _de pactis_ of the _Corpus Iuris Canonici_ and casuist writings as to the moral efficacy of promises before him, to see that religion paved the way for much that was done presently in the name of philosophy.

To the jurists of the seventeenth and eighteenth centuries no distinction between natural obligations and civil obligations was maintainable since all natural rights or obligations must for the very reason that they were natural be legal also. If it was morally obligatory that one adhere to a pact, then it must be treated as a contract. However much systematized analytically, the Roman categories of contract did not deal with undertakings from this standpoint. What the jurists desired was not analytical categories but a principle upon which men were to be held or not to be held upon their promises. Thus the philosophy of contract, the principles underlying the binding force of promises and agreements, became the chief problem of philosophical jurisprudence of the seventeenth century, as interests of personality were the chief subject of discussion in the eighteenth century, and interests of substance, the philosophy of the law of property, the chief subject of discussion in the nineteenth century. The decisive element in seventeenth-century thought as to contract was the idea of natural law; the idea of deduction from the nature of man as a moral creature and of legal rules and legal institutions which expressed this ideal of human nature. But the idea was put to work upon existing materials and the result was a reciprocal influence of the conception of enforcing promises as such because morally binding, on the one hand, shaped to some extent by canon law and casuist discussions of what promises were binding in conscience and when, and the ideas of _nudum pactum_ and _causa debendi_ on the other hand. Roman law was assumed to be embodied reason. As D'Aguesseau put it, Rome was ruling by her reason, having ceased to rule by her authority. Hence all consideration of the subject starts with the assumption that there are morally naked agreements which for that reason are to be naked legally. Where there was an exchange of promises there was the authority of Justinian for enforcement (_synallagma_) and it was easy to find a reason in the analogy of exchange of property. Where something was exchanged for a promise, that something was a _causa debendi_. But suppose there was no exchange of promises nor was anything exchanged for the promise. There was nothing but a promise assented to. In Roman law this would have to take the form of a stipulation. In the Germanic law it would have required an oath or the form of a real transaction of pledge or exchange. At common law it required delivery of a sealed instrument. Clearly there was no moral efficacy inherent in these forms. Why should these "abstract" promises be enforced and not others? Should every such promise be enforced or should none be enforced without something in the way of exchange, or should such promises be classified for the purpose of enforcement, and if so, how?

Two theories arose in the seventeenth century. One may be called the theory of an equivalent. This theory is obviously a rationalization of the Germanic _causa debendi_ influenced by canon law and casuist writings. According to this theory an abstract promise, no equivalent having been given for it, is not naturally and hence is not legally binding. Three reasons have been given for this which have figured in juristic discussion of the subject ever since. It was said that one who trusts another who makes a promise for no equivalent does so rashly. He cannot ask to be secured in such an unfounded expectation. This is too much in the spirit of the strict law. It denies any interest except where the law secures it. It says that if the law does not secure the interest, one is a fool to rely on the promise and so has no interest. In like manner the strict law said that if one gave his formal undertaking through fraud or mistake or coercion, he was a fool or a coward and was not to be helped. But we cannot prove the interest by the law. We must measure the law with reference to the interest. Again it was said that if one promises without equivalent he does so more from "ostentation" than from real intention and so an equivalent shows that he acted from calculation and deliberately. It is only deliberate promises that are morally binding, for only such promises are relied upon by the prudent, upright man in his intercourse with his neighbors. If this reason is sound, equivalent is only a mode of proving deliberation and the real point should be that the promise was made deliberately as something by which the maker expected to be bound, not that the deliberation was evidenced in a particular way by an equivalent. A third reason was that one who parted with an equivalent in exchange for or in reliance on a promise is injured in his substance if the promise is not kept. But if this is the reason, the law should simply require restitution in case of non-performance. If the interest involved is the deduction from substance through rendering the equivalent, the obligation should be _quasi ex contractu_ rather than _ex contractu_.

Our Anglo-American law of contracts was much influenced by this theory of equivalents. In the seventeenth century four types of promise were legally enforceable at common law: (1) A formal acknowledgment of indebtedness by bond under seal, often conditioned upon performance of a promise for which it was a security, (2) a covenant or undertaking under seal, (3) the real contract of debt, and (4) a simple promise upon consideration, that is, in exchange for an act or for another promise. The first conclusively acknowledged an equivalent, in the second it could be said that the seal presupposed or implied one, in the third the obligation arose from the detention of something by him to whom it had been delivered, and in the fourth the act or counter-promise was the motive or consideration for the promise and as a cause of or reason for making it was the equivalent for which the promisor chose to assume the undertaking. With some aid from a dogmatic fiction in the case of covenants, the common law could be adjusted to this theory reasonably well. Accordingly as far back as Bacon we find consideration treated from this standpoint in the English books. But it was never a satisfactory explanation. If the theory was sound it ought not to matter whether the equivalent was rendered before the promise or after it or simultaneously with it. Indeed, English equity in the nineteenth century took subsequent action in reliance upon a promise of a gift to be a common-law consideration on the basis whereof the promise was specifically enforceable. Equity never wholly adopted this or any other theory. At least after the middle of the eighteenth century equity was supposed to follow the law as to what was a contract. But the common law was not settled till the nineteenth century and we find the chancellors using consideration frequently to mean not equivalent but any reason for making the promise and thus making it synonymous with the civilian's _causa_. The so-called meritorious consideration, consideration of blood and of love and affection, and the cases of promises sustained by moral obligation of a debtor to secure his creditor, of a husband to settle property on his wife and of a parent to provide for a child, show the idea of _causa_ at work in equity. It is significant that Doctor and Student was often cited in these connections. The most thoroughgoing attempt to apply the equivalent theory to be found in the books is Langdell's working out of a system of the so-called conditions implied in law or dependent promises on that basis. As an example of vigorous legal analysis it rivals Austin. But it did not succeed in shaping the law.

On the Continent the second theory, the theory of the inherent moral force of a promise made as such, came to prevail. This was the theory of Grotius. It was generally adopted by Continental writers of the eighteenth century and, as has been seen, it broke down the Roman categories and led to the rule that a promise as such, intending a legal transaction, created legal obligation. At the end of the eighteenth century Lord Mansfield came very near establishing it in our law by his doctrine that no promise made as a business transaction could be _nudum pactum_. But he was too late. Growth stopped for a season and the nineteenth century set itself to systematize and harmonize what it had received rather than to carry the development further.

When the natural-law foundation of enforcing promises crumbled, the metaphysical jurists sought to provide a new one. Kant said that it was impossible to prove that one ought to keep his promise, considered merely as a promise, and deduced contract from property as a form of conveyance or alienation of one's substance involved in the very idea of individual rights. So far as consistent with abstract freedom of will according to a universal law one might alienate his services as well as his property, and an undertaking to perform something was an alienation of that sort. This view was generally taken so that while the seventeenth century sought to rest rights upon contract and the eighteenth century rested contract on the inherent moral significance of a promise, the nineteenth century, making the philosophy of property the important thing, rested contract on property. Three of these theories are worth a moment's notice.

Fichte says that the duty of performing an agreement arises when one party thereto begins to act under it. Juristically this seems to be a rationalization of the Roman innominate contract. There, in case a pact was performed on one side, he who performed might claim restitution _quasi ex contractu_ or claim the counter-performance _ex contractu_. Philosophically the idea seems to be that of the equivalent theory, in the form with which we are familiar in Anglo-American discussion of this subject as the injurious-reliance theory. According to the latter, unless the promisee has parted with an equivalent or has begun to act in reliance upon the agreement, he has no moral claim to fulfilment. This is not a theory of the law as it is or as it ever has been. Formal contracts require nothing of the sort. It is true, English equity, under the influence of the equivalent theory, did lay down in the nineteenth century that a contract under seal with no common-law consideration behind it would not be enforced. But that proposition was subject to many exceptions when it was announced, more have since developed and more are developing. As things are, the exceptions are of more frequent application than the rule itself. Nor is Fichte's theory a statement of moral ideas of his day or of ours. Then and now the moral duty to keep abstract promises was and is recognized. That a man's word should be "as good as his bond" expresses the moral sentiment of civilized society. But the philosopher saw that the law did not go so far and was trying to frame a rational explanation of why it fell short. It should be noticed that Fichte is really trying to show why a promise may be regarded as a part of one's substance and why one's claim to performance may be treated as his property.

Hegel also explains contract in terms of property, treating a promise as a disposition of one's substance. Hence in his view the so-called abstract promise is a mere subjective qualification of one's will which he is at liberty to change. This theory and the foregoing assume the Roman law or the older law of Continental Europe, and speak from the reaction from natural law which in England at the same time was overruling the liberal doctrines of Lord Mansfield.

Later metaphysical jurists rely upon the idea of personality. The Romanist thinks of a legal transaction as a willing of some change in a person's sphere of rights to which the law, carrying out his will, gives the intended effect. If the transaction is executed, revocation would involve aggression upon the substance of another. If it is executory, however, why should the declared intent that the change take place in the future be executed by law despite the altered will of the promisor? Some say that this should be done where there is a joint will from which only joint action may recede. Where the parties have come to an agreement, where their wills have been at one, the law is to give effect to this joint will as a sort of vindication of personality. It is evident, however, that this explanation assumes the will theory, the subjective theory of legal transactions. If we start from the objective theory it breaks down. Take for instance the case of an offer, which a reasonable man would understand in a given way, accepted by the offeree in that understanding when the offerer really meant something else. Or take the case of an offer wrongly transmitted by telegraph and accepted in good faith as it is transmitted. Here there is no community of will and yet the law may well hold, as we do in America, in both cases, that there is a contract. No metaphysical theory has prevailed to prevent the steady march of the law and of juristic thought in the direction of an objective doctrine of legal transactions. Nowhere, indeed, has the deductive method broken down so completely as in the attempt to deduce principles upon which contracts are to be enforced.

Later in the nineteenth century men came to think more about freedom of contract than about enforcement of promises when made. To Spencer and the mechanical positivists, conceiving of law negatively as a system of hands off while men do things, rather than as a system of ordering to prevent friction and waste so that they may do things, the important institution was a right of free exchange and free contract, deduced from the law of equal freedom as a sort of freedom of economic motion and locomotion. Justice required that each individual be at liberty to make free use of his natural powers in bargains and exchanges and promises except as he interfered with like action on the part of his fellow men, or with some other of their natural rights. Whether all such transactions should be enforced against him or only some, and if the latter, which, are questions belonging to an affirmative rather than to a negative science of law.

Historical jurists accepted the will theory and have been its leading advocates in modern times. They saw that the whole course of legal history had been one of wider recognition and more effective enforcement of promises. Those who accepted the ethical idealistic interpretation of legal history could see freedom as an ethical idea realizing itself in a larger freedom of self-assertion and self-determination through promises and agreements and a wider giving effect to the will so asserted and determined. For the most part they wrote on the Continent where the field of legally enforceable promises had ceased to be bounded by a narrow fence of Roman historical categories. Thus they had no call to rationalize dogmas of not enforcing promises made as business transactions. Those who accepted the political interpretation saw freedom as a civil or political idea realizing itself in a progress from _status_ to contract in which men's duties and liabilities came more and more to flow from willed action instead of from the accident of social position recognized by law. The English historical jurists might well have asked how far English rules as to consideration were consonant with the implications of such a theory, and whether they must not be expected to give way as the idea unfolded more completely in experience of popular action and judicial decision. But the leader of this school was not a common-law lawyer and the American historical jurists devoted their energies to devising a historical-analytical theory of consideration rather than to the wider question of what promises should be enforced and why.

Here as in other places the historical jurist and the utilitarian were in agreement as to results although they differed widely as to the mode of reaching them. The former saw in contract a realization of the idea of liberty. The latter saw in it a means of promoting that maximum of individual free self-assertion which he took to be human happiness. Hence the former called for freedom of contract and should have called for wide general enforcement of promises. The latter held to a doctrine of unshackling men and allowing them to act as freely as possible, which involved the complementary position of extending the sphere and enforcing the obligation of contract. The difference between these ways of thinking and those of the end of the eighteenth century is brought out if we compare Blackstone (1765) with a dictum of Sir George Jessel a century later (1875). The former says that the public is "in nothing so essentially interested as in securing to every individual his private rights." The latter, discussing a question of what agreements are against public policy and therefore unenforceable, says: "If there is one thing more than another which public policy requires it is that men of full age and competent understanding shall have the utmost liberty of contracting and that such contracts shall be enforced by courts of justice." But the utilitarians put the emphasis upon the first, the negative, rather than upon the second, the affirmative, part of this twofold program. This is true also of the historical jurists and of the positivists. The English trader and entrepreneur was not seeking for legal instruments. He could work passably with those which the law furnished if the law would but let him. What he sought was to be free from legal shackles which had come down from a society of a different nature organized on a different basis and with other ends. Hence juristic thought addressed itself to this for a season rather than to the doctrine of consideration and the reason for non-enforcement of deliberate promises where not put in the form of bargains.