圣人警戒于事情发展的苗头；愚人恐惧于事情明显暴露后。
The real reward in science is knowing that your work can save lives.
The development of formal systems has revolutionized our understanding of mathematics.
质量不是一种行为，而是一种习惯。
我不是一个完美的人，我从未声称自己是。