最可怕的怪物是那些看起来和我们一样的怪物。
The most terrifying monsters are the ones that look just like us.
I want to stand as close to the edge as I can without going over. Out on the edge you see all kinds of things you can't see from the center.
数学中的每个问题都是一个等待解决的谜题,而乐趣就在于解决的过程。