"True, O philosopher!" I said, "but there is always new life, and new life comes from the old. The flower dies and its seed lives; man dies and his seed inherit the earth. Christianity dies and--and what?" "That may be," he said thoughtfully. "It may be that the new religion will grow from the seed o' the deid Christianity; that I canna say. What I do say is that ministers are oot-o'-date; they are doin' useless labour . . . when they're no fishin' and curlin'." VII. Duncan came over to-night, and he asked my advice about books. "What books would you advise a teacher to buy?" he asked. "There are scores of good books," I replied, "but no teacher can afford to buy them." "I know," he said crossly; "I've had a row with the Income Tax people. I asked for a rebate of ten pounds for necessary school books, and they wouldn't allow it, although I'm told that if a London merchant buys a London Directory he gets a rebate for the amount." "I agree that it is unjust," I said, "but the new Income Tax proposals allow twenty pounds a year for teachers' books." "Just tell us what you would advise a teacher to spend his twenty quid on," said Macdonald. "It depends on his tastes," I said. "If his subject is History he will buy history books; if his subject is behaviour, he'll buy psychology books." "Give us an idea of your own library," said Duncan. I sat down and wrote out a list from memory. It ran as follows:-- BOOKS ON EDUCATION:-- _The Play Way_, by Caldwell Cook. _The Path to Freedom in the School_, by Norman MacMunn. _What Is and What Might Be_, by Edmond Holmes. Montessori's three volumes. _An Adventure in Education_, by J. H. Simpson. BOOKS ON PSYCHO-ANALYSIS AND PSYCHOLOGY: Freud's _Interpretation of Dreams, Psychopathology of Everyday Life, Three Contributions to the Sexual Theory_. Jung's _Psychology of the Unconscious, Studies in Word Association, Analytical Psychology_. Frink's _Morbid Fears and Compulsions_. Maurice Nicoll's _Dream Psychology_. Morton Prince's _The Unconscious_. Pfister's _The Psycho-analytic Method_. Ernest Jones' _Psycho-analysis_. Ferenczi's _Contributions to Psycho-analysis_. Wilfred Lay's _The Child's Unconscious Mind_. Moll's _The Sexual Life of the Child_. Adler's _The Neurotic Constitution_. Bernard Hart's _The Psychology of Insanity_. CROWD PSYCHOLOGY:-- _The Crowd in Peace and War_, Martin Conway. _Instincts of the Herd in Peace and War_, Trotter. _The Crowd_, Gustave le Bon. GENERAL PSYCHOLOGY:-- _Psychology and Everyday Life_, Swift. _Textbook of Psychology_, James. _The Boy and His Gang_, Puffer. _Mental Conflicts and Misconduct_, Healy. _The Individual Delinquent_, Healy. _Rational Sex Ethics_, Robie. _Social Psychology_, McDougall. _The Play of Man_, Groos.