To do mathematics is to explore an infinite landscape of ideas.
我们会死,这让我们成为幸运者。大多数人永远不会死,因为他们永远不会出生。
在互联网上获得正确答案的最好方法是发布一个明显错误的答案,并等待有人来纠正你。
Personality can change more in your 20s than at any other time in life.