密码学中的挑战不仅仅是创建不可破解的代码，还包括创建即使技术发展也能保持安全的系统。
The challenge in cryptography is not just to create unbreakable codes, but to create systems that remain secure even as technology evolves.
Talkers are usually more articulate than doers, since talk is their specialty.
When everyone tries to sell at the same time, liquidity disappears.