在科学的海洋中，每个人都是学生，永远有新的东西要学习。

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

Gather ye rosebuds while ye may. Old Time is still a-flying. And this same flower that smiles today, tomorrow will be dying.

解释：齐国是强国，利用它的强大进攻宋国，让他逞强，燕国就可以乘机打败齐国；齐国是大国，利用它的大国野心吞并宋国，增加土地，燕国就可以乘机进攻。