So far I have been mainly concerned with differences in intuitional method due to difference of generality in the intuitive beliefs recognised as ultimately valid. There is, however, another class of differences arising from a variation of view as to the precise quality immediately apprehended in the moral intuition. These are peculiarly subtle and difficult to fix in clear and precise language, and I therefore reserve them for a separate chapter. NOTE.--Intuitional moralists have not always taken sufficient care in expounding their system to make clear whether they regard as ultimately valid, moral judgments on single acts, or general rules prescribing particular kinds of acts, or more universal and fundamental principles. For example, Dugald Stewart uses the term “perception” to denote the immediate operation of the moral faculty; at the same time, in describing what is thus perceived, he always seems to have in view general rules. Still we can tolerably well distinguish among English ethical writers those who have confined themselves mainly to the definition and arrangement of the Morality of Common Sense, from those who have aimed at a more philosophical treatment of the content of moral intuition. And we find that the distinction corresponds in the main to a difference of periods: and that--what perhaps we should hardly have expected--the more philosophical school is the earlier. The explanation of this may be partly found by referring to the doctrines in antagonism to which, in the respective periods, the Intuitional method asserted and developed itself. In the first period all orthodox moralists were occupied in refuting Hobbism. But this system, though based on Materialism and Egoism, was yet intended as ethically constructive. Accepting in the main the commonly received rules of social morality, it explained them as the conditions of peaceful existence which enlightened self-interest directed each individual to obey; provided only the social order to which they belonged was not merely ideal, but made actual by a strong government. Now no doubt this view renders the theoretical basis of duty seriously unstable; still, assuming a decently good government, Hobbism may claim to at once explain and establish, instead of undermining, the morality of Common Sense. And therefore, though some of Hobbes’ antagonists (as Cudworth) contented themselves with simply reaffirming the absoluteness of morality, the more thoughtful felt that system must be met by system and explanation by explanation, and that they must penetrate beyond the dogmas of common sense to some more irrefragable certainty. And so, while Cumberland found this deeper basis in the notion of “the common good of all Rationals” as an ultimate end, Clarke sought to exhibit the more fundamental of the received rules as axioms of perfect self-evidence, necessarily forced upon the mind in contemplating human beings and their relations. Clarke’s