伦理学的任务不仅是理解世界，而且是改变世界。
幸福是一种选择，而不是结果。
The night is a great book, but the stars are its letters.
The world is changed by your example, not by your opinion.
Technology should serve the farmer, not the other way around.
Writing is another way of making love.
天下的一切事物不可以没有标准，做人要有做人的标准，即原则;做事要有做事的标准，即规则;治国要有治国的标准，即法则。不遵循一定的标准而能成事者，自古以来是没有的。
The more you give, the more you get back.