The ethical theories characterized by these perversions are products of, and are appropriate to the forms of social life which the imperfectly-adapted constitutions of men produce. But with the progress of adaptation, bringing faculties and requirements into harmony, such incongruities of experience, and consequent distortions of theory, must diminish; until, along with complete adjustment of humanity to the social state, will go recognition of the truths that actions are completely right only when, besides being conducive to future happiness, special and general, they are immediately pleasurable, and that painfulness, not only ultimate but proximate, is the concomitant of actions which are wrong. So that from the biological point of view, ethical science becomes a specification of the conduct of associated men who are severally so constituted that the various self-preserving activities, the activities required for rearing offspring, and those which social welfare demands, are fulfilled in the spontaneous exercise of duly proportioned faculties, each yielding when in action its quantum of pleasure, and who are, by consequence, so constituted that excess or defect in any one of these actions brings its quantum of pain, immediate and remote. NOTE TO § 33. In his _Physical Ethics_, Mr. Alfred Barratt has expressed a view which here calls for notice. Postulating Evolution and its general laws, he refers to certain passages in the _Principles of Psychology_ (1st Ed. Pt. III. ch. viii. pp. 395, sqq. cf. Pt. IV. ch. iv.) in which I have treated of the relation between irritation and contraction which "marks the dawn of sensitive life;" have pointed out that "the primordial tissue must be differently affected by contact with nutritive and with innutritive matters"--the two being for aquatic creatures respectively the soluble and the insoluble; and have argued that the contraction by which a protruded part of a rhizopod draws in a fragment of assimilable matter "is caused by a commencing absorption of the assimilable matter." Mr. Barratt, holding that consciousness "must be considered as an invariable property of animal life, and ultimately, in its elements, of the material universe" (p. 43), regards these responses of animal tissue to stimuli, as implying feeling of one or other kind. "Some kinds of impressed force," he says, "are followed by movements of retraction and withdrawal, others by such as secure a continuance of the impression. These two kinds of contraction are the phenomena and external marks of pain and pleasure respectively. Hence the tissue acts so as to secure pleasure and avoid pain by a law as truly physical and natural as that whereby a needle turns to the pole, or a tree to the light" (p. 52). Not without questioning that the raw material of consciousness is present even in undifferentiated protoplasm, and everywhere exists potentially in that Unknowable