War is an ugly thing， but not the ugliest of things； the decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth war is much worse.

我思故我在已被废弃；我们应说，我感受故我在。

I don't think you can ever do your best. Doing your best is a process of trying to do your best.

解决数学问题的过程往往比解决方案本身更重要。

保持进步的唯一方法是不断推动自己。