1. The emergence and development of science are determined by production from the beginning.

2. If a nation wants to stand at the highest peak of science, it must not be without theoretical thinking for a moment.

3. Chemistry is the science that studies the qualitative changes of objects due to changes in their quantitative composition.

4. As long as natural science uses thinking, its development form is hypothesis.

5. Every science analyzes an individual form of movement or a series of interrelated and mutually transformed forms of movement.

6. Physics is called the mechanics of molecules, chemistry is called the physics of atoms, and biology is called the chemistry of proteins.

7. Labor creates the person himself.

8. We should not be overly intoxicated with our human victory over nature. For every such victory, nature takes its revenge on us.

9. Principles are not the starting point of research, but its final result.

10. The more stressful life is, the more it shows people’s vitality.

11. Only marriage based on love is moral.

12. Bravery and the belief in victory often bring the battle to a successful conclusion.

13. There is no huge disaster that is not compensated by historical progress.

14. A decisive battle can only be conducted when the possibility of victory is very high.

15. Any religious teachings are not enough to support a society that is on the verge of collapse.