All men are immortal， but those who are not educated are immortal in a lower and less enviable sense.
"A novel is a conversation between the writer and the reader, across time and space."
形式系统的发展彻底改变了我们对数学的理解。
The beauty of mathematics is that it allows us to see the world in a way that is both precise and profound, revealing the underlying order that governs all things.