如果你不知道自己急切需要的是什么,那很可能就是睡觉。
In mathematics, the simplest questions often lead to the most profound discoveries.
问题不在于存在问题。问题在于期望并非如此,并认为存在问题本身就是问题。
A man who dares to waste one hour of time has not discovered the value of life.