"A gap in this outline must now be filled up. There remains a further advance not yet even hinted. For beyond so behaving that each achieves his ends without preventing others from achieving their ends, the members of a society may give mutual help in the achievement of ends. And if, either indirectly by industrial co-operation, or directly by volunteered aid, fellow-citizens can make easier for one another the adjustments of acts to ends, then their conduct assumes a still higher phase of evolution; since whatever facilitates the making of adjustments by each, increases the totality of the adjustments made, and serves to render the lives of all more complete." In the outline which I have now given you of the evolution of conduct, you will perceive the foundation of Spencer's system of ethics. Actions begin to assume an ethical character--conduct becomes good or bad--when the acts tend to promote or to prevent the general well-being of the community. But how is the perception or recognition of this quality in an action reached? What is the determining reason for considering an action good or bad? Obviously, conduct is considered by us as good or bad according as its aggregate results to self, or others, or both, are pleasurable or painful. Mr. Spencer shows that every other proposed standard of conduct derives its authority from this standard: "No school can avoid taking for the ultimate moral aim a desirable state of feeling called by whatever name--gratification, enjoyment, happiness. Pleasure somewhere, at some time, to some being or beings, is an inexpugnable element of the conception. It is as much a necessary form of moral intuition as space is a necessary form of intellectual intuition."[129] On this fundamental basis, Mr. Spencer rests his system of absolute ethics and relative ethics. Relative ethics are those by which, allowing for the friction of an incomplete life and the imperfections of existing natures, we may ascertain with approximate correctness what is the relatively right. This is often exceedingly difficult, because two cases are rarely the same in all their circumstances. But absolute ethics are the ideal ethical truths, expressing the absolutely right. Such a system of ideal ethical truths, which must have precedence over relative ethics, is reached only when there has been, in conformity with the laws of evolution in general, and in conformity with the laws of organization in particular, an adaptation of humanity to the social state, changing it in the direction of an ideal congruity. But, as in relative ethics, the production of happiness or pleasure is the aim, however imperfectly accomplished, so in the ideal state the aim is the same, the difference being that in the latter the accomplishment of happiness or pleasure and the exclusion or prevention of pain are complete.