The best way to create interest in a subject is to render it worth knowing, which means to make the knowledge usable.
激发对一门学科兴趣的最好方法是使其值得了解，这意味着要使知识可用。
The best way to learn is by doing and making mistakes.
数学的美在于它能够用一种既精确又普遍的语言来描述宇宙。