在快速变化的世界中，适应性至关重要。

It is no use saying, 'We are doing our best.' You have got to succeed in doing what is necessary.

困苦受辱不值得忧虑，而自取困辱才值得忧虑。荣耀利益不是真正的快乐，忘掉荣耀利益才是真正的快乐。

最伟大的发明是那些最直接满足人类需求的发明。