The presentation of the facts here made differs from the presentations before made, mainly by ignoring the inner part of the correspondence and attending exclusively to that outer part constituted of visible actions. But the two are in harmony; and the reader who wishes further to prepare himself for dealing with our present topic from the evolution point of view, may advantageously join to the foregoing more special aspect of the phenomena, the more general aspects before delineated. After this passing remark, I recur to the main proposition set forth in these two chapters, which has, I think, been fully justified. Guided by the truth that as the conduct with which Ethics deals is part of conduct at large, conduct at large must be generally understood before this part can be specially understood; and guided by the further truth that to understand conduct at large we must understand the evolution of conduct, we have been led to see that Ethics has for its subject-matter that form which universal conduct assumes during the last stages of its evolution. We have also concluded that these last stages in the evolution of conduct are those displayed by the highest type of being, when he is forced, by increase of numbers, to live more and more in presence of his fellows. And there has followed the corollary that conduct gains ethical sanction in proportion as the activities, becoming less and less militant and more and more industrial, are such as do not necessitate mutual injury or hinderance, but consist with, and are furthered by, co-operation and mutual aid. These implications of the Evolution-Hypothesis, we shall now see harmonize with the leading moral ideas men have otherwise reached. CHAPTER III. GOOD AND BAD CONDUCT. § 8. By comparing its meanings in different connections and observing what they have in common, we learn the essential meaning of a word; and the essential meaning of a word that is variously applied, may best be learned by comparing with one another those applications of it which diverge most widely. Let us thus ascertain what good and bad mean. In which cases do we distinguish as good, a knife, a gun, a house? And what trait leads us to speak of a bad umbrella or a bad pair of boots? The characters here predicted by the words good and bad, are not intrinsic characters; for apart from human wants, such things have neither merits nor demerits. We call these articles good or bad according as they are well or ill adapted to achieve prescribed ends. The good knife is one which will cut; the good gun is one which carries far and true; the good house is one which duly yields the shelter, comfort, and accommodation sought for. Conversely, the badness alleged of the umbrella or the pair of boots, refers to their failures in fulfilling the ends of keeping off the rain and comfortably protecting the feet, with due regard to appearances.