数学不是沿着一条清理得很好的高速公路小心行进,而是进入一个陌生的荒野的旅程,探险者常常会迷路。
The laws of nature are unforgiving.
图画书就像是可以捧在手心里的小艺术品。
I think goals should never be easy, they should force you to work, even if they are uncomfortable at the time.
数学中最深刻的见解往往来自最抽象的理论。
一个人笑的时间是与众神共度的时间。