Marx’s famous sayings include:

1. Conscience is determined by a person’s knowledge and entire lifestyle.

2. Friendship is as pure as the morning fog. Flattery cannot win friendship. Friendship can only be consolidated with loyalty.

3. If a person works only for himself, he may become a famous scholar, an extremely smart person, and an excellent poet, but he will never become a truly perfect or great man.

4. Friendship always needs to be sown with loyalty, watered with enthusiasm, cultivated with principles, and cared for with understanding.

5. Think about everything.

6. Instead of decorating yourself with gorgeous clothes, it is better to arm yourself with knowledge.

7. Being ignorant will not help anyone at any time and will not bring benefits.

8. There is no smooth road in science. Only those who are not afraid of hard work and climb along the steep mountain road can hope to reach the glorious peak.