It has been overemphasized in two ways: first, many of the writers on imitation ignore the fact that the other law of association, that of interpenetrating, is also in operation in our social life, as well as the fact that it has always been the fundamental law of existence; secondly, they speak as if it were _necessary_ for human beings to be under the law of imitation, not that it is merely a stage in our development. Footnote 12: This is the alpha and omega of philosophical teaching: Heraclitus said, “Nature desires eagerly opposites and out of them it completes its harmony, not out of similars.” And James, twenty-four hundred years later, has given his testimony that the process of life is to “compenetrate.” Footnote 13: Also the group-units of early societies are studied to the exclusion of group-units within modern complex society. Footnote 14: Even some of our most advanced thinking, which repudiates the like-minded theory and takes pains to prove that imitation is not an instinct, nevertheless falls into some of the errors implicit in the imitation theory. Footnote 15: When we come in Part III to consider the group process in relation to certain political methods now being proposed, we shall find that part of the present disagreement of opinion is verbal. I therefore give here a list of words which can be used to describe the genuine social process and a list which gives exactly the wrong idea of it. Good words: integrate, interpenetrate, interpermeate, compenetrate, compound, harmonize, correlate, coördinate, interweave, reciprocally relate or adapt or adjust, etc. Bad words: fuse, melt, amalgamate, assimilate, weld, dissolve, absorb, reconcile (if used in Hegelian sense), etc. ------------------------------------------------------------------------ IV THE GROUP PROCESS: THE COLLECTIVE FEELING --------------