'My dear Edie, I've always admitted that you were simply perfect,' Harry said, glancing at her with visible admiration, 'and I don't think anything on earth could possibly improve you--except perhaps a judicious course of differential and integral calculus, which might possibly serve to tone down slightly your exuberant and excessive vitality. Still, you know, from the point of view of society, which is a force we have always to reckon with--a constant, in fact, that we may call Pi--there can be no doubt in the world that to have been on the Continent is a differentiating factor in one's social position. It doesn't matter in the least what your own private evaluation of Pi may be; if you don't happen to know the particular things and places that Pi knows, Pi's evaluation of you will be approximately a minimum, of that you may be certain.' 'Well, for my part, I don't care twopence about Pi as you call it,' said Edie, tossing her pretty little head contemptuously; 'but I'm very glad indeed to have been on the Continent for my own sake, because of the pictures, and palaces, and mountains, and waterfalls we've seen, and not because of Pi's opinion of me for having seen them. I would have been the same person really whether I'd seen them or not; but I'm so much the richer myself for that view from the top of the Col de Balme, and for that Murillo--oh, do you remember the flood of light on that Murillo?--in the far corner of that delicious gallery at Bologna. Why, mother darling, what on earth has been vexing you?' 'Nothing at all, Edie dear; leastways, that is, nothing to speak of,' said her mother, coming up from the shop hot and flurried from her desperate encounter with the redoubtable Miss Luttrell. 'Oh, I know just what it is, darling,' cried the girl, putting her arm around her mother's waist caressingly, and drawing her down to kiss her face half a dozen times over in her outburst of sympathy. 'That horrid old Miss Catherine has been here again, I'm sure, for I saw her going out of the shop just now, and she's been saying something or other spiteful, as she always does, to vex my dearie. What did she say to you to-day, now do tell us, duckie mother?' 'Well, there,' said Mrs. Oswald, half laughing and half crying, 'I can't tell 'ee exactly what she did say, but it was just the kind of thing that she mostly does, impudent like, just to hurt a body's feelings. She said you'd better not go to Oxford, Edie, but stop at home and learn your catechism.' 'You might have pointed out to her, mother dear,' said the young man, smoothing her hair softly with his hand, and kissing her forehead, 'that in the most advanced intellectual centres the Church catechism is perhaps no longer regarded as the absolute ultimatum of the highest and deepest economical wisdom.'