可持续性不是一种选择,而是我们对后代的责任。
People are not lazy. They simply have impotent goals - that is, goals that do not inspire them.
某个命题可以从某一组公理通过某一规则系统推导出来,这一事实本身并不使其为真。
我总是相信,最重要的不是成为最好的,而是比昨天更好。
The best decisions are made when we listen more than we speak.