岁寒，然后知松柏之后彫也。
只有到了气候寒冷的时候，才能了解松柏傲霜独立的品格。
我非常相信“各有所好”。
事情过后议论别人，身在局外议论局内人，是做学问的人最容易犯的毛病。在事后议论别人，往往将聪明人说得极其愚笨；身在局外议论局内的人，往往将困难的事情说得极其容易，这两种毛病都是由待人不忠诚、不宽容而引起的。
I think it's important to have a sense of humor about yourself and not take yourself too seriously.
The most effective development interventions are often the simplest ones.
Sustainability isn't just a buzzword—it's our responsibility to future generations.