The joy of solving a mathematical problem is unparalleled; it is a moment of pure intellectual triumph.
时间被认为只有一个维度,而空间有三个维度。
未经反思的人生是不完整的人生。
活着就意味着终有一死。活着就意味着每时每刻都是一个幸存者。
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'