The ancients, then, equally with the moderns, Plato being the single exception, agree in making virtue only a means to an end. Indeed, strictly speaking, even Kant banished Eudaemonism from Ethics more in appearance than in reality, for between virtue and happiness he still leaves a certain mysterious connection;--there is an obscure and difficult passage in his doctrine of the Highest Good, where they occur together; while it is a patent fact that the course of; virtue runs entirely counter to that of happiness. But, passing over this, we may say that with Kant the ethical principle appears as something quite independent of experience and its teaching; it is transcendental, or metaphysical. He recognises that human conduct possesses a significance that oversteps all possibility of experience, and is therefore actually the bridge leading to that which he calls the "intelligible"[2] world, the _mundus noumenôn_, the world of Things in themselves. The fame, which the Kantian Ethics has won, is due not only to this higher level, which it reached, but also to the moral purity and loftiness of its conclusions. It is by the latter that most people have been attracted, without paying much attention to the foundation, which is propounded in a very complex, abstract and artificial form; and Kant himself required all his powers of acumen and synthesis to give it an appearance of solidity. Fortunately, he separated his Ethics from the exposition of its basis, devoting to the latter a special work entitled the _Grundlegung zur Metaphysik der Sitten_, the theme of which will be found to be precisely the same as that of our prize essay. For on page xiii of the preface he says: "The present treatise is nothing else but an attempt to find out and establish the supreme principle of morality. This is an investigation, whose scope is complete in itself, and which should be kept apart from all other moral researches.". It is in this book that we find the basis, that is to say, the essentials of his Ethics set forth with an acute penetration and systematic conciseness, as in no other of his writings. It has, moreover, the great advantage of being the first of Kant's moral works, appearing,[3] as it did, only four years later than the _Kritik der Reinen Vernunft_, and consequently it dates from the period when, although he was sixty-one, the detrimental effect of old age on his intellect was not yet perceptible. On the other hand, this is distinctly traceable in the _Kritik der Praktischen Vernunft_, which was published in 1788, or one year later than the unhappy remodelling of the _Kritik der Reinen Vernunft_ in the second edition, whereby the latter, his immortal master-piece, was obviously marred. An analysis of this question is to be found in the preface to the new edition by Rosenkranz,[4] from which my own investigation makes it impossible for me to dissent. The _Kritik der Praktischen Vernunft_ contains in its essentials the same