Gunpowder made me understand the transience and eternity of life. 火药让我理解了生命的短暂与永恒。

——赠宋庆龄题词，1922年

The challenge of modern cryptography is not just to secure communication, but to do so in a way that is both efficient and scalable.

"The only way to do great work is to love what you do."

对往日良辰只付之一叹，借纷繁景象把心事排除。