Children have real understanding only of that which they invent themselves, and each time that we try to teach them something too quickly, we keep them from reinventing it themselves.

你知道，有些鸟是注定不会关在牢笼里的，它的每一片羽毛都闪耀着自由的光辉。

自守形式的研究证明了对称性在数学中的力量。