itself to modern morality be not a relation determined exclusively by contract. The recognition of this difference between past ages and the present enters into the very essence of the most famous contemporary speculations. It is certain that the science of Political Economy, the only department of moral inquiry which has made any considerable progress in our day, would fail to correspond with the facts of life if it were not true that Imperative Law had abandoned the largest part of the field which it once occupied, and had left men to settle rules of conduct for themselves with a liberty never allowed to them till recently. The bias indeed of most persons trained in political economy is to consider the general truth on which their science reposes as entitled to become universal, and, when they apply it as an art, their efforts are ordinarily directed to enlarging the province of Contract and to curtailing that of Imperative Law, except so far as law is necessary to enforce the performance of Contracts. The impulse given by thinkers who are under the influence of these ideas is beginning to be very strongly felt in the Western world. Legislation has nearly confessed its inability to keep pace with the activity of man in discovery, in invention, and in the manipulation of accumulated wealth; and the law even of the least advanced communities tends more and more to become a mere surface-stratum having
X
