人的仁慈从未削弱自由者的毅力或软化他们。一个国家不必变得残酷就可以坚强。
Human kindness has never weakened the stamina or softened the fiber of a free people. A nation does not have to be cruel to be tough.
We need creativity to change society.
My fans are my motivation.
成本不是为了计算而存在的，而是为了被降低而存在的。
The pursuit of mathematical truth is a pursuit of beauty, elegance, and simplicity.
我学到的最重要的事情是，完成某件事的最好方法就是开始。