1. Don't be afraid of being used by others; if someone uses you, it means you are still useful.
2. Eating is practical, gambling is hedging, and whoring is a waste.
3. Spending one cent should yield the effect of ten cents; this is what it means to be good at spending money.
4. Doing things should be like cutting tofu with a knife - smooth on both sides.
5. No matter how many banknotes you have, they're just gold and silver mountains; but when it comes to human connections, their value is as vast as heaven and earth...
6. A hero doesn't fear humble origins, the key is to have a good mind.
7. There are three kinds of "face" that are hardest to manage in life: dignity, social grace, and favor.
8. One must be sincere towards others. Even if someone deceives me temporarily, I can always move them with sincerity, making them convinced from the heart. My way of dealing with the world lies entirely in this character of "sincerity". If you can apply this principle flexibly, only then can you start talking about making friends.
9. Mr. Du once said to a cultured friend: You were originally a carp fish, after 500 years of cultivation you jumped through the dragon gate and became a dragon. As for me, I was originally an eel, after 1000 years of cultivation I became a carp; then after another 500 years of cultivation I jumped through the dragon gate. If the two of us were to fail together, you would still be a carp, but I would become an eel again. How could I not be cautious in doing things?