3. There is no royal road to science, and only those who do not dread the fatiguing climb along steep mountain roads can hope to reach its glorious summit.

4. The eternal nature of science lies in its unremitting pursuit. As far as its capacity is concerned, science is inexhaustible, and as far as its goal is concerned, it will never be reached.

5. Science is a crutch in the hands of pioneers.

6. Science is a beautiful scenery, which makes people linger.

7. Science has no national boundaries, because it belongs to all mankind's wealth and is a torch to illuminate the world. But scholars belong to the motherland.