The comfort of the rich depends upon an abundant supply of the poor.

To be without some of the things you want is an indispensable part of happiness.

渔业可持续发展不是选择，而是唯一的前进道路。

心理学概念的价值在于其生活应用。

"The only limit to our realization of tomorrow will be our doubts of today."

最好的领导者是那些倾听多于发言，并以诚信行事的人。