2. Actually, every class, even every industry, has its own morality. -Engels
3. Selling melons is also said to be bitter, and selling wine is also said to be thin.
4. Although the industries are different, there is no difference in the character of a genius.
5. The fuller the ear of grain, the lower it will be, and the more knowledgeable it will be, the more humble it will be.
6. if he is upright, he will not be allowed to do it. if he is not upright, he will not be allowed to do it.
7. I got a bargain and cheated the whole business.
8. Although the industries are different, there is no difference in the character of a genius. -Balzac
9. Goods are rare and not expensive.
1, the same way, peer care.
11. You cheat people in business and cut yourself off.
12, to open a conscience shop, don't make money.
13, the real thing, the kid sou has no deceit.
14. A stupid teacher can only teach the truth, but a clever teacher should teach children to discover the truth.
15. For scientists, the insurmountable principle is to work for human civilization. -Needham
16. Honesty does not lose money, and meanness does not make money.
17. Actually, every class, even every industry, has its own morality.