Free vaccines are more valuable than expensive treatments, yet harder to promote.

我只是努力在每种情况下保持冷静和镇定。

学习数学的最好方法就是做数学。

创新不是来自于更多的资源，而是来自于更好的资源利用。

Technology is anything that wasn't around when you were born.

A wise man said: before you speak， let your words pass through three gates. At the first gate， ask yourself， "Is it true？" At the second gate， ask "Is it necessary？" At the third gate， ask， "Is it kind？"

逻辑学研究不仅仅是关于形式系统，而是理解理性思维的基本结构。