CHAPTER XIV PSYCHOLOGICAL Evolution of Mind—Body and Mind—Experience and Intuitions—Tfst of Truth IN seeking to appreciate Spencer's contributions to Psychology, it seems necessary to distinguish between what he tried to do and his success in doing it. For an attempt, especially a pioneer attempt, may have great historical importance although it is only to a limited degree successful. The attempts to cross a continent, or to scale a mountain, to make a flying machine, or to discover the nature of protoplasm, may be relative failures, but even the attempts may spell progress. They may offer clues for other attempts, or they may show that certain ways of attacking the problem are unpromising. And so while the doctors of philosophy differ as to the value of many of Spencer's psychological essays, there are few who go the length of denying their historical interest and importance. (l) Evolution of Mind.—In his imaginary review of his Principles of Psychology, which is not without a grim humour, Spencer supposes the critic to begin by saying: "Our attitude towards this work is some- thing like that of the Roman poet to whom the poetaster brought some verses with the request that he would erase any parts he did not like, and who epts.