The third stage was reached when a larger view was taken of consideration, and it was expressed in terms of detriment to the promisee. This change was a change in substantive law, and logically it should have been applied throughout. But it arose in another and later form of action, under circumstances peculiarly connected with that action, as will be explained hereafter. The result was that the new doctrine prevailed in the new action, and the old in the old, and that what was really the anomaly of inconsistent theories carried out side by side disguised itself in the form of a limitation upon the action of debt. That action did not remain, as formerly, the remedy for all binding contracts to pay money, but, so far as parol contracts were concerned, could only be used where the consideration was a benefit actually received by the promisor. With regard to obligations arising in any other way, it has remained unchanged. I must now devote a few words to the effect upon our law of the other mode of proof which I have mentioned. I mean charters. A charter was simply a writing. As few could write, most people had to authenticate a document [272] in some other way, for instance, by making their mark. This was, in fact, the universal practice in England until the introduction of Norman customs. /1/ With them seals came in. But as late as Henry II. they were said by the Chief Justice of England to belong properly only to kings and to very great men. /2/ I know no ground for thinking that an authentic charter had any less effect at that time when not under seal than when it was sealed. /3/ It was only evidence either way, and is called so in many of the early cases. /4/ It could be waived, and suit tendered in its place. /5/ Its conclusive effect was due to the satisfactory nature of the evidence, not to the seal. /6/ But when seals came into use they obviously made the evidence of the charter better, in so far as the seal was more difficult to forge than a stroke of the pen. Seals acquired such importance, that, for a time, a man was bound by his seal, although it was affixed without his consent. /7/ At last a seal came to be required, in order that a charter should have its ancient effect. /8/ A covenant or contract under seal was no longer a promise well proved; it was a promise of a distinct nature, for which a distinct form of action came to be provided. [273] /1/ I have shown how the requirement of consideration became a rule of substantive law, and also why it never had any foothold in the domain of covenants. The exception of covenants from the requirement became a rule of substantive law also. The man who had set his hand to a charter, from being bound because he had consented to be, and because there was a writing to prove it, /2/ was now held by force of the seal and by deed alone as distinguished from all other writings. And to maintain the integrity of an inadequate theory, a seal was said to a consideration.