智者不会武断地肯定任何事情，甚至不会断言智者一无所知。
The wise person does not dogmatically assert anything， not even that the wise person knows nothing.
Never forget what you are, for surely the world will not. Make it your strength. Then it can never be your weakness. Armor yourself in it, and it will never be used to hurt you.
Investing in cleaner coal technologies is an investment in our future.
心理学必须是一门关于事实的科学，而非理论。
筹划洋人的事情一定要先了解洋人的情况，要了解洋人的情况一定知道洋人的情况。
子张问仁，孔子说：“能在天下推行五种品德，就是仁了。“哪五种？”说：“庄重、宽厚、诚实、勤敏、慈惠，庄重就不会受侮辱，宽厚就会得到拥护，诚实就会受到重用，勤敏就会获得成功，慈惠就会有本钱使用人。”