it for granted that a considerable amount of it is necessary. It may be; if so, it is the more important to face its bad intellectual effects. Obvious is the loss of energy of thought immediately available when one is consciously trying (or trying to seem to try) to attend to one matter, while unconsciously one's imagination is spontaneously going out to more congenial affairs. More subtle and more permanently crippling to efficiency of intellectual activity is a fostering of habitual self-deception, with the confused sense of reality which accompanies it. A double standard of reality, one for our own private and more or less concealed interests, and another for public and acknowledged concerns, hampers, in most of us, integrity and completeness of mental action. Equally serious is the fact that a split is set up between conscious thought and attention and impulsive blind affection and desire. Reflective dealings with the material of instruction is constrained and half-hearted; attention wanders. The topics to which it wanders are unavowed and hence intellectually illicit; transactions with them are furtive. The discipline that comes from regulating response by deliberate inquiry having a purpose fails; worse than that, the deepest concern and most congenial enterprises of the imagination (since they center about the things dearest to desire) are casual, concealed. They enter into action in ways which are unacknowledged. Not subject to rectification by consideration of consequences, they are demoralizing.