每个家庭都有自己的秘密,但在某些国家,这些秘密更大、更危险。
The greatest glory in living lies not in never falling, but in rising every time we fall.
我没法和懒人相处,我们讲的不是同一种语言,我不了解懒人,也不想去了解。
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.