The question here arises, how far the ethical law is to be determined by the biological law, for if the biological law is dominant, and the ethical dependant, the latter can only be explained and justified by the former. But we at once see that the two things are not identical and co-extensive. We recognise the difference between the biologically efficient and the ethically good and bad. The law of Biology refers to the actions of each individual in regard to itself alone, whatever the functions, etc., which constitute that self. It relates to its good alone, irrespective of the good of others, unless, and until, sympathy with others has become part of the functions of the individual. But Mr. Spencer seeks to make the biological view of conduct identical with the ethical by introducing the conception of quantitative life. In this case an organism has more life the greater the number of correspondences it has with the environment. And since the environment is constituted of two classes of objects, the objective and the subjective--the purely physical and the organisms possessing feeling--so the correspondences established in the individual are of two kinds, the psychological and the emotional. In the former class are comprised all the objects and relations of the inorganic world, the great laws and intricacies of nature and her past history, including the history of organisms and of man. In the latter are included all the feeling, living creatures around us, with their pleasures, hopes, and pains, and all the characters, noble and beautiful, delicate or brutal, passionate or aspiring, who have ever trod the stage of history, or wrought or thought for us in antecedent ages. In fact all the patient work and mighty achievements of science, and all the emotional relations of men have afforded scope for the quantitative increase of life; and in proportion to the increase so it is suggested that life became ethical. The biological law is the continuous adjustment of organisms to environment, and the increase of adjustment is the increase of life.