这个世界是最好的可能世界。

穿着粗布衣裳，吃着简单饭菜，这样的快乐哪里需要刻意寻求？

教育者的心必须是一团活生生的火焰，是温暖和光明的源泉。

The true test of a mathematical idea is its ability to inspire further questions.

The financial markets generally are unpredictable. So that one has to have different scenarios... The idea that you can actually predict what's going to happen contradicts my way of looking at the market.