The book does not seek to give a systematic account, but to analyse Aristotle's writings so as to discover in them the half obliterated traces of his mental progress. Its biographical framework is intended merely to make more palpable the fact that his previously undifferentiated mass of compositions falls into three distinct periods of evolution. Owing to the meagreness of the material the picture that we thus obtain is of course fragmentary, yet its outlines constitute a distinctly clearer view of Aristotle's intellectual nature and of the forces that inspired his thinking. Primanly, this is a gain to the history of philosophical problems and origins. The author's intention is, however, not to make a contribution to systematic philosophy, but to throw light on the portion of the history of the Greek mind that is designated by the name of Aristotle.

