The most powerful and enduring brands are built from the heart. They are real and sustainable. They are not manufactured by a marketing department.

解析：教导学生，不到他想弄明白而不得的时候，不去开导他；不到他想出来却说不出来的时候，不去启发他。

Every mathematical problem has a solution; it just takes time and effort to find it.

如果在一个游戏中，获胜变得过于重要，那么我们可以修改游戏规则以便从中获得更多乐趣。而修改规则本身就可以成为一个新的游戏。

真正的圣贤，决不是愚腐不化。真正的豪杰也绝不是粗鲁疏略。