“Above all, do not attempt to use science (I mean, the real sciences) as a defense against Christianity. They will positively encourage him to think about realities he can’t touch and see. There have been sad cases among the modern physicists. If he must dabble in science, keep him on economics and sociology; don’t let him get away from that invaluable “real life”. But the best of all is to let him read no science but to give him a grand general idea that he knows it all and that everything he happens to have picked up in casual talk and reading is “the result of modern investigation.” Do remember you are there to fuddle him. From the way some of you young fiends talk, anyone would suppose it was out job to teach!
Your affectionate uncle