2. Only under the new social conditions can labor be transformed from a heavy burden into a relaxed and pleasant physiological requirement. -Chernyshevski

3. Only at the stage of social development that not only eliminated the class opposition, but also forgot this opposition in real life, can it be possible to transcend the class opposition and the memory of this opposition. -Engels

4. Only people's social practice is the standard of truth in people's understanding of the outside world. The standard of truth can only be social practice.

5. Only people who lead an idle life can see money as big as the sky. A guy who doesn't produce but only consumes is tantamount to a thief in society. -Balzac

6. Only thorough action is the only way to change yourself and the society around you.

7. In school and life, the most important motivation of work is the pleasure in work, the pleasure in getting the result of work and the understanding of the social value of this result. -Einstein

8. In our society, labor is not only an economic category, but also a moral category. -makarenko

9. People who grow up successfully in hardships often lead to abnormal deviations due to psychological shadows. This deviation means that there is always a kind of hostility towards society and people, and they don't trust anyone, let alone sympathize with anyone. The miserly love of money is a secondary phenomenon in psychopathy. On the contrary, a prudent and knowledgeable person, although he grew up from hardships, is more compassionate and generous. Because he knows life and the joys and sorrows of the world. -nan huaijin

1. Whether his life is happy, safe and auspicious depends on whether his life is morally sound and whether he can set an example for society. Therefore, self-cultivation education has also become the main part of his school work. -pestalozzi

11. Happiness lies in creating a new life, and in remoulding and re-educating the man who has become the master of the country and the great wisdom of the socialist era. -ostrovsky

12. People who enjoy privileges but have no power are wastes. An educated man without influence is a pile of worthless rubbish. Some people have been educated in knowledge, morality and religious beliefs, but they have not become a positive force for doing good in society. These people are sorry for the cost of cultivating and supporting them. If they are Christians, they have committed the crime of being respected in disguise. They should have become the salt in the world, and the primary responsibility of salt should be salty. -Henry Van Dyke