1. If you want to see what happens, pay careful attention to everything. ——Song Fan, China

2. You should observe carefully in order to understand; you should work hard to understand in order to act. ——France Romain Rolland

3. All reasoning must be derived from observation and experiment. ——Italian Galileo

4. To measure a person's true personality, just observe what he does when he thinks no one is seeing him. ——British Macaulay

5. The word genius originally has an extremely ambiguous meaning, and its definition is by no means “born knowing something and being able to do it without learning”. There is no one in heaven and earth who is born to know it. There is no one who can do it without learning. Genius is mostly developed through hard work. Genius is mostly due to careful cultivation.

——China·Guo Moruo