The joy of mathematics is in the struggle to understand.
好人就是无论他过去在道德上多么不值得,现在正在变得更好的人。
Innovation is the only way to break through the bottleneck.
There are no hard distinctions between what is real and what is unreal, nor between what is true and what is false.
财富不应该集中在少数人手中,而应该通过公正的竞争分配给所有人。