1. The most tortuous road is sometimes the shortest; Feichtwanger.

2. One of the great advantages of outstanding people is that they are unyielding in adverse and difficult encounters; Beethoven.

3. The right road is not necessarily a flat straight road. It will inevitably have twists and turns, rugged obstacles, detours, and even go astray; Zhu Guangqian.

4. Temporary defeat is much better than temporary victory; Abfalaz.

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