He who can, does. He who cannot, teaches.
我认为我们有责任维持意识的光明，确保它继续进入未来。
To achieve satisfactory investment results is easier than most people realize; to achieve superior results is harder than it looks.
不了解敌情，不可以行军打仗，不熟悉洋人的情况，不可以远谋。
我不考虑年龄。那些告诉我我太老了不能做某事的人，我只是忽略他们。
Freedom of speech is the great bulwark of liberty; they prosper and die together.