A critical essay in the philosophy of history.- "Mind-stuff" from the historical point of view.- Giordano Bruno.- The musical and the picturesque elements in poetry.- Individualism and state-action.- Volkmann's psychology.- Politics and industry.- On the nature of thought.- The theory of justice.- Animal intelligence.- Aesthetics.- On the ethics of naturalism.- The philosophy of redemption.- Philosophical antinomies.- Giordano Bruno and his time.- Dead matter and living matter.- On free-will.- Idealism in England in the eighteenth century.- Physical realism.- Reality as phenomenon.- Thought and life.- The laws of imitation.- The problem of causality.- The philosophical basis of evolution.- Correspondence.- The psychology of stimulants.