The use of a program to prove the 4-color theorem will not change mathematics - it merely demonstrates that the theorem, a challenge for a century, is a finite problem.

【大意】古来圣哲不珍视直径成尺的璧玉，却珍重每一寸光阴，因为时间最是难得，却最容易失去。

为了保护所爱的人，人们可以变得更强。