THE SCIENCE OF LIFE
relations of the epoch and indicated by the position of the political and social centre of gravity of the world brought about by them. Hence, for a proper understanding of any of the conditions of a single people, it is absolutely necessary to realise the whole situation of the human world at the time, and minutely study the array of world-forces that has been the result of mutual intercourse between the several peoples in social, economic, intellectual, and political matters.
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