JKR: Well, I'm glad you think so, because I enjoyed this one. Draco did a lot of growing up in this book as well. I had an interesting discussion, I thought, with my editor Emma, about Draco. She said to me, "So, Malfoy can do Occlumency," which obviously Harry never mastered and has now pretty much given up on doing, or attempting. And she was querying this and wondering whether he should be as good as it, but I think Draco would be very gifted in Occlumency, unlike Harry. Harry’s problem with it was always that his emotions were too near the surface and that he is in some ways too damaged. But he's also very in touch with his feelings about what's happened to him. He's not repressed, he's quite honest about facing them, and he couldn't suppress them, he couldn't suppress these memories. But I thought of Draco as someone who is very capable of compartmentalizing his life and his emotions, and always has done. So he's shut down his pity, enabling him to bully effectively. He's shut down compassion — how else would you become a Death Eater? So he suppresses virtually all of the good side of himself. But then he's playing with the big boys, as the phrase has it, and suddenly, having talked the talk he's asked to walk it for the first time and it is absolutely terrifying. And I think that that is an accurate depiction of how some people fall into that kind of way of life and they realize what they're in for. I felt sorry for Draco. Well, I’ve always known this was coming for Draco, obviously, however nasty he was.

Harry is correct in believing that Draco would not have killed Dumbledore, which I think is clear when he starts to lower his wand, when the matter is taken out of his hands.】

算题外话：德拉科的大脑封闭术是贝拉教的，大概是在伏地魔给他布置任务的暑假期间，后来斯内普也对德拉科学会大脑封闭术感到意外（斯内普要对他摄神取念，德拉科挡住了），因为德拉科当时的年纪太小了。

维基上的内容：大脑封闭术最基本的形式包括清空头脑——不去思考，不去回忆，不去感觉，以此阻止摄神取念大师感觉到自己的情感和想法。而更高级一些的大脑封闭术则是仅仅封闭自己特定的思想、情感和记忆，从而给摄神取念大师创造出一种无可挑剔的“假象”。因此，在使用大脑封闭术时，很难看出这个人是否在撒谎。使用大脑封闭术需要很大的意志力，类似抵抗夺魂咒的效果一样。除此之外，它也需要在心里和情绪上有高度的自律。大脑封闭术同时也能够影响吐真剂的效果，除非这个巫师当时并没有戒心。大脑封闭术是魔法中冷僻的一门学科，且具有很高的难度，因此不是霍格沃茨的日常教学内容。

这也是解释了文章里德拉科抵挡了西奥多给他夺魂的合理，他主要是怕穆迪，刚好西奥多又因为没有小巴蒂这样的食死徒厉害，所以德拉科挡住了西奥多的夺魂咒而没有挡住穆迪的，毕竟穆迪曾经把他变成白鼬，他害怕他，面对他的时候脑子都空了更别替挡夺魂咒了。他只要重新控制一下情绪就好了。

下章就让布斯巴顿和德姆斯特朗出来～

第63章

在门厅公布了布斯巴顿和德姆斯特朗的代表将于十月三十日星期五傍晚六点抵达的启事后，对住在城堡里的人产生了明显的影响。在接下来的一星期里，人们似乎都只谈论一个话题：三强争霸赛。

谣言在学生中间迅速传来传去，像传染性很强的细菌：谁会争当霍格沃茨的勇士，争霸赛会有哪些项目，布斯巴顿和德姆斯特朗的学生与他们有什么不同？

城堡也正在进行彻底的打扫。几幅肮脏的肖像被擦洗干净了，那些被擦洗的人物对此十分不满。他们缩着身子坐在像框里，闷闷不乐地嘟哝着，每次一摸到脸上新露出的粉红色嫩肉，就疼得龇牙咧嘴。那些盔甲突然变得锃光瓦亮，活动的时候也不再嘎吱嘎吱响了。

费尔奇一看到有学生忘记把鞋擦干净，就凶狠地大发雷霆，吓得两个一年级的女生犯了歇斯底里症。而其他教工也显得格外紧张，比如莱拉从德拉科嘴里得知麦格教授甚至厉声吼了纳威隆巴顿，她希望他不要在德姆斯特朗的人露馅，因为他连最简单的转换咒都没有掌握。

德拉科那天整整笑了一个下午，因为隆巴顿把他的耳朵嫁接到了一棵仙人掌上面。

十月三十日那天早晨，礼堂仿佛在一夜之间被装饰一新。墙上挂着巨大的丝绸横幅，每一条代表霍格沃茨的一个学院：红底配一头金色狮子的是格兰芬多，蓝底配一只古铜色老鹰的是拉文克劳，黄底配一只黑獾的是赫奇帕奇，绿底配一条银色蟒蛇的是斯莱特林。在教工桌子的后面，挂着那条最大的横幅，上面是霍格沃茨的饰章：狮、鹰、獾、蛇联在一起，环绕着一个大字母H。