The only way to grow is to challenge yourself.

The true measure of an economy’s success is how well it serves all its citizens.

If you're not stubborn, you'll give up on experiments too soon. And if you're not flexible, you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.

在科学中，我们试图解释我们不理解的事物。在数学中，我们试图理解我们无法解释的事物。

如果他没有伤害我的自尊，我是可以容忍他的傲慢的。

In every word, there is a world waiting to be discovered.