2. Sun Tzu said: If you want to take it, you must give it first.
3. Ma Yun: If you want to succeed, you must have the spirit of never giving up. When you learn to give up, you begin to make progress.
4. Roudaki: How happy are those who give something, and how unfortunate are the ungrateful misers.
5. Wei Zhi: A good horse can take risks, and the field is not as good as cattle; A strong car can carry loads, and crossing the river is not as good as a boat; People can't find their shortcomings, but seek their perfection.