在备战时，我总是发现计划是无用的，但规划是不可或缺的。
In preparing for battle I have always found that plans are useless， but planning is indispensable.
我不是先知或石器时代的人，只是一个有超人潜力的凡人。
In mathematics, the simplest explanation is often the most profound.
广义相对论是所有现有物理理论中最美的。
Writing is a way of talking without being interrupted.