数学之美在于它能够精确而优雅地描述自然界的基本法则。
每一天都是改变生活的新机会。
The only way to do great work is to love what you do.
如果你没有偶尔失败,说明你还没有足够地突破界限。
We are not doing e-commerce; we are doing social e-commerce.