系统价值的证明是它的存在。

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.

The most dangerous poison is the feeling of achievement. The antidote is to think like a beginner every morning.

伟大的公司建立在伟大的产品之上，而更重要的是伟大的人。