The capacity of the human mind for forming and manipulating symbols is what sets us apart from other animals.

The truth is rarely pure and never simple.

I'd rather not have the money and be happy.

当那些有趣的东西成为习惯的时候，问题就来了。我认为这就是我们文化中发生的事情。快餐已成为日常用餐。

Mathematics is a living subject, constantly evolving and growing.

最大的风险是不冒任何风险。在一个快速变化的世界中，唯一注定失败的策略就是不冒险。

最大的恶和最严重的罪行是贫穷。