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.
When you are young spend at least 6 months to one year living as poor as you can， owning as little as you possibly can， eating beans and rice in a tiny room or tent， to experience what your “worst” lifestyle might be. That way any time you have to risk something in the future you won’t be afraid of the worst case scenario.
The best time to sell a stock is almost never.
"The only limit to our realization of tomorrow is our doubts of today."