A brief enquiry into the nature and foundations of morals appears an obvious, and, indeed, almost an indispensable preliminary, to any examination of the moral progress of Europe. Unfortunately, however, such an enquiry is beset with serious difficulties, arising in part from the extreme multiplicity of detail which systems of moral philosophy present, and in part from a fundamental antagonism of principles, dividing them into two opposing groups. The great controversy, springing from the rival claims of intuition and utility to be regarded as the supreme regulator of moral distinctions, may be dimly traced in the division between Plato and Aristotle; it appeared more clearly in the division between the Stoics and the Epicureans; but it has only acquired its full distinctness of definition, and the importance of the questions depending on it has only been fully appreciated, in modern times, under the influence of such writers as Cudworth, Clarke, and Butler upon the one side, and Hobbes, Helvétius, and Bentham on the other. Independently of the broad intellectual difficulties which must be encountered in treating this question, there is a difficulty of a personal kind, which it may be advisable at once to meet. There is a disposition in some moralists to resent, as an imputation against their own characters, any charge of immoral consequences that may be brought against the principles they advocate. Now it is a peculiarity of this controversy that every moralist is compelled, by the very nature of the case, to bring such charges against the opinions of his opponents. The business of a moral philosophy is to account for and to justify our moral sentiments, or in other words, to show how we come to have our notions of duty, and to supply us with a reason for acting upon them. If it does this adequately, it is impregnable, and therefore a moralist who repudiates one system is called upon to show that, according to its principles, the notion of duty, or the motives for performing it, could never have been generated. The Utilitarian accuses his opponent of basing the entire system of morals on a faculty that has no existence, of adopting a principle that would make moral duty vary with the latitude and the epoch, of resolving all ethics into an idle sentiment. The intuitive moralist, for reasons I shall hereafter explain, believes that the Utilitarian theory is profoundly immoral. But to suppose that either of these charges extends to the character of the moralist is altogether to misconceive the position which moral theories actually hold in life. Our moral sentiments do not flow from, but long precede our ethical systems; and it is usually only after our characters have been fully formed that we begin to reason about them. It is both possible and very common for the reasoning to be very defective, without any corresponding imperfection in the disposition of the man.