关于人性，唯一真正知道的是它是会变化的。
可持续性不仅是一种趋势，更是我们对下一代的责任。
Retire into yourself and ask yourself this question: Must I write？ If the answer is yes， then you must keep writing.
出门时笑一笑，不要心怀悲哀，广阔的胸怀处处都能敞开。
The most damaging phrase in the language is: 'We've always done it this way.'
如果战略达到了目标，它就是有用的；如果战略实现了目标，它就是成功的。
A true mathematician is always a student, always learning.