Your last letter was quite enough to make me worry about you. It was not a bit like yourself. Reading between the lines I should imagine that your engagement to this girl is making you rather unhappy, and I see you have lost all the feeling of romance that you had before the war. You make a great mistake if you think you can be romantic without religion. Sometimes I think that with both of us the secret of success, when we find it, is the mystical element in us: something flows into us that enlarges our personalities, and when it ebbs out our personalities shrink; I should call your last two letters rather shrivelled.