幸福不是偶然发生的事情。它不是好运或随机机会的结果。它不是金钱可以买到或权力可以命令的东西。它不取决于你外部发生的事情,而取决于你内部发生的事情。
Happiness is not something that happens. It is not the result of good fortune or random chance. It is not something that money can buy or power command. It depends not on what happens outside of you, but on what happens inside of you.
科学中最令人兴奋的短语,预示着新发现的不是"我发现了!"而是"这有点奇怪..."
The joy of mathematics is in the struggle to understand.
历史不仅仅是关于过去;它是关于过去如何塑造现在。