The only explanation, if we reject the idea of a mere coincidence, seems to be, that quite apart from opportunity, the exceptional stir and fervour of national life evokes or may evoke qualities which in ordinary times lie dormant, unknown even to their possessors. The potential Miltons are ‘mute’ and ‘inglorious’ not because they cannot find a publisher, but because they have nothing they want to publish. They lack the kind of inspiration which, on this view, flows from social surroundings where great things, though of quite another kind, are being done and thought. If this theory be true (and it is not without its difficulties) one would like to know whether these undoubted outbursts of originality in the higher and rarer form of genius, are symptomatic of a general rise in the number of persons exhibiting original capacity of a more ordinary type. If so, then the conclusion would seem to be that some kind of widespread exhilaration or excitement is required in order to enable any community to extract the best results from the raw material transmitted to it by natural inheritance. _Cambridge: Printed at the University Press._ Transcriber’s Note In this file, text in _italics_ is indicated by underscores. On page 41, “Greek in culture Roman by political descent” was corrected to “Greek in culture, Roman by political descent.”