1. History itself is a realistic part of natural history and the process of natural generation becoming human. ——Marx (Germany) "1844 Economic-Philosophical Manuscripts"

2. History is nothing but the activities of people pursuing their own goals. ——Marx and Engels (Germany) "The Holy Family"

3. History cannot be deceived for a long time, just as the people cannot be deceived for a long time. ——Hua Gang (middle) "The Overturning of Chinese History"

4. The best thing that history has given us is the enthusiasm it arouses. ——Goethe (Germany) "Goethe's Maxims and Reflections"

5. History and philosophy have many eternal responsibilities, and they are also simple responsibilities. ——Hugo (France) "Les Misérables"

6. The historian's task is to distinguish between the real and the false, the certain and the uncertain, and the doubtful and unacceptable. ——Goethe (Germany) "Goethe's Maxims and Reflections"

7. The duty of historians is to be accurate, truthful, and unemotional; no matter inducements or threats, no matter hatred or hobbies, they cannot deviate from the truth. .

——Cervantes (Spain) "Don Quixote"