"When Festus expressed the opinion to the apostle Paul, ''Your great learning is driving you crazy,'' he may have been echoing a sentiment common to men of his time. So far as I know, however, there is neither biblical nor scientific warrant for the theory that excessive learning may lead to insanity. However, ample proof readily could be supplied to support the idea that much learning often leads to dullness, unbelief, abstractness, triviality, irrelevance, and arrogance. That it inevitably does so is false, but that intellectuals are tempted by one or more of these tendencies is certain..."
(read the rest: Learning, Dr. Jay Adams)