这就是我们在生活中必须做的：承受巨大的创伤和细小的擦伤，然后继续前进。
That is what we have to do in life: to take the great wounds and the little scratches and keep on going.
Learning is not simply the accumulation of knowledge but the transformation of understanding.
你唯一应该努力超越的人，是昨天的自己。
教人学习却坚持有天命的观点，这就好像叫人包起头发来却有去掉了他的帽子。
The challenge for us is to create content that is compelling and relevant.
数学之美不在于其复杂性，而在于其简洁性以及它揭示隐藏真理的方式。