Pleasure is the greatest good, and we should seek it and avoid pain.

The best time to plant a tree was 25 years ago. The second best time is today.

可持续性不是一种趋势，而是我们为后代共同承担的责任。

Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence.

You can't build a peaceful world on empty stomachs and human misery.

I have now taken a serious task upon myself and I fear a greater one than is in the power of any man to perform.