mit the variety of manifestations which external causes bring about in their workings on the uniform character of the nature of man.  Yet, after all is said, these are perhaps but very general statements: the ordinary effects of peace and war are dwelt on, but there is no real analysis of the immediate causes and general laws of the phenomena of life, nor does Thucydides seem to recognise the truth that if humanity proceeds in circles, the circles are always widening.