7. Nevertheless, although words alone are not sufficient tokens to declare the will; if yet to words relating to the future there shall some other signs be added, they may become as valid as if they had been spoken of the present. If therefore, as by reason of those other signs, it appear that he that speaks of the future, intends those words should be effectual toward the perfect transferring of his right, they ought to be valid. For the conveyance of right depends not on words, but, as hath been instanced in the fourth article, on the declaration of the will. [Sidenote: In matters of free gift, words of the future convey no right.] 8. If any man convey some part of his right to another, and doth not this for some certain benefit received, or for some compact, a conveyance in this kind is called a gift or free donation. But in free donation, those words only oblige us, which signify the present or the time past; for if they respect the future, they oblige not as _words_, for the reason given in the foregoing article. It must needs therefore be, that the obligation arise from some other tokens of the will. But, because whatsoever is voluntarily done, is done for some good to him that wills it; there can no other token be assigned of the will to give it, except some benefit either already received, or to be acquired. But it is supposed that no such benefit is acquired, nor any compact in being; for if so, it would cease to be a free gift. It remains therefore, that a mutual good turn without agreement be expected. But no sign can be given, that he, who used future words toward him who was in no sort engaged to return a benefit, should desire to have his words so understood as to oblige himself thereby. Nor is it suitable to reason, that those who are easily inclined to do well to others, should be obliged by every promise, testifying their present good affection. And for this cause, a promiser in this kind must be understood to have time to deliberate, and power to change that affection, as well as he to whom he made that promise, may alter his desert. But he that deliberates, is so far forth free, nor can be said to have already given. But if he promise often, and yet give seldom, he ought to be condemned of levity, and be called not a donor, but doson. [Sidenote: The definition of contract and covenant.] 9. But the act of two, or more, mutually conveying their rights, is called a _contract_. But in every contract, either both parties instantly perform what they contract for, insomuch as there is no trust had from either to other; or the one performs, the other is trusted; or neither perform. Where both parties perform presently, there the contract is ended as soon as it is performed. But where there is credit given, either to one or both, there the party trusted promiseth after-performance; and this kind of promise is called a _covenant_.