THREE:Before ascertaining in what direction Plato sought for an outlet from these accumulated difficulties, we have to glance at a Dialogue belonging apparently to his earliest compositions, but in one respect occupying a position apart from the rest. The Crito tells us for what reasons Socrates refused to escape from the fate which awaited him in prison, as, with the assistance of generous friends, he might easily have done. The aged philosopher considered that by adopting such a course he would be setting the Athenian laws at defiance, and doing what in him lay to destroy their validity. Now, we know that the historical Socrates held justice to consist in obedience to the law of the land; and here for once we find Plato agreeing with him on a definite and positive issue. Such a sudden and singular abandonment of the sceptical attitude merits our attention. It might, indeed, be said that Plato��s inconsistencies defy all attempts at reconciliation, and that in this instance the desire to set his maligned friend in a favourable light triumphed over the claims of an impracticable logic. We think, however, that a deeper and truer solution can be found. If the Crito inculcates obedience to the laws as a binding obligation, it is not for the reasons which, according to Xenophon, were adduced by the real Socrates in his dispute with the Sophist Hippias; general utility and private interest were the sole grounds appealed to then. Plato, on185 the other hand, ignores all such external considerations. True to his usual method, he reduces the legal conscience to a purely dialectical process. Just as in an argument the disputants are, or ought to be, bound by their own admissions, so also the citizen is bound by a tacit compact to fulfil the laws whose protection he has enjoyed and of whose claims his protracted residence is an acknowledgment. Here there is no need of a transcendent foundation for morality, as none but logical considerations come into play. And it also deserves to be noticed that, where this very idea of an obligation based on acceptance of services had been employed by Socrates, it was discarded by Plato. In the Euthyphro, a Dialogue devoted to the discussion of piety, the theory that religion rests on an exchange of good offices between gods and men is mentioned only to be scornfully rejected. Equally remarkable, and equally in advance of the Socratic standpoint, is a principle enunciated in the Crito, that retaliation is wrong, and that evil should never be returned for evil.120 And both are distinct anticipations of the earliest Christian teaching, though both are implicitly contradicted by the so-called religious services celebrated in Christian churches and by the doctrine of a divine retribution which is only not retaliatory because it is infinitely in excess of the provocation received.

THREE:CHAPTER III56

THREE:In the use of hydraulic apparatus for transmitting and applying power, there is, however, this difficulty to be contended with: water is inelastic, and for the performance of irregular duty, there is a loss of power equal to the difference between the duty that a piston may perform and what it does perform; that is, the amount of water, and consequently the amount of power given off, is as the movement and volume of the water, instead of as the work done. The application of hydraulic machinery to the lifting and handling of weights will be further noticed in another place.