Sustainability is not an option, it's a responsibility.
可持续性不是选择，而是责任。
知识只有在应用时才有用。
In mathematics, the art of proposing a question must be held of higher value than solving it.
我们写作不是为了被理解，而是为了理解。
我相信，整个世界被这种新奇而神奇的媒介（电报）启蒙的时代已不遥远。
