Every mathematical problem is a window into a deeper understanding of the world.
每一个数学问题都是通向更深入理解世界的窗口。
Why should you mind being wrong if someone can show you that you are？
Sustainability is no longer an option; it's a necessity for the future of leather tanning.
每个圣人都有过去，每个罪人都有未来。
世界上最好的论点也无法改变一个人的想法。唯一能做到这一点的，是一个好故事。