In racial development evolution of feeling has not pursued one invariable course. Distinctive sentiments and modes of feeling characterize the different races of mankind as well as distinctive outward features, and the impressing on a plastic race of these divergent states of feeling is mainly, though not entirely, due to external conditions—not climatic and geographical conditions only, but also the form of civilization that had taken root and moulded the habits and customs of the race. Greek civilization, for instance, tended to develop largely the aesthetic group of feelings, while in Scotland these feelings, through outward influences I must not pause to consider, have been stunted in growth, and moral sentiments have had a deeper and firmer development. Amongst barbarous tribes of men the violent emotions—anger, fear, jealousy, revenge—generally speaking, hold sway; but there are also in various parts of the world uncivilized communities where these fierce passions are little known, and where, in consequence of the absence of warlike surroundings, the gentle, tender sentiments that have for their foundation family ties and peaceful social life, prevail, and are considerably developed. The conditions of emotional evolution in a given race, then, are complex. We have to bear in mind a threefold environment—cosmic, planetary, social—pressing upon individual life and powerfully swaying the emotional part of it. Social environment is pre-eminently potent in modifying emotional characteristics; yet the prime factor of change in social environment springs from this region of feeling, and this factor may, under rational guidance, take a path of direct and rapid progression.