科学中的创新往往来自于以新的方式看待老问题。

"We are not seven, we are one."

Nowadays, particularly in the United States, if you meet someone at the bottom of society, they may unkindly be described as a "loser." There's a real difference between an unfortunate and a loser, and that shows 400 years of evolution in society and our belief in who is responsible for our lives. It's no longer the gods, it's us. We're in the driving seat.

我们就是我们记住的东西。

解释：砍伐树木不把树根砍掉，必能重新生长；堵塞水不把源头堵住，必会重新流出；消除祸患不铲除产生祸患的根基，祸患还会再生。

数学中最令人兴奋的时刻是当你发现一些隐藏在显而易见之处的东西。