沉默是快乐的最佳使者：如果我能说出多少，我就不会那么快乐。
可持续性不是一种选择，而是一种责任。
The best management is a true science, resting upon clearly defined laws, rules, and principles.
The world is a great book, of which they that never stir from home read only a page.
在冬天的深处，我发现我内心有一个不可战胜的夏天。