In a sense, this book is a sequel to Uses and Abuses of Psychology, but it has been written to stand on its own feet. In the first book I was concerned with problems of social usefulness and the contribution which psychology can make to society, and with the many unfounded claims which have caused so many intelligent critics to discount psychological contributions almost completely. In the present book I have taken a rather wider field. There is no doubt great deal of nonsense is talked, even by educated people, on a large number of subjects but it is unlikely that there is any subject where the ratio of sense to nonsense is smaller than in matters psychological.