政治不是理论，而是实践。
对天资在中等程度以上的人，可以和他谈论高深的学问；而对于中等以下天资的人，则不可以和他谈论高深的学问。
The best designs are those that solve problems without drawing attention to themselves.
如果没有君主，人们各自可以自私自利。
The future of food security lies beneath the waves—if we dare to farm it responsibly.
The future of coal industry lies in clean and efficient utilization.
Picture books are like little pieces of art that you can hold in your hands.
