I have neither outstanding understanding nor extraordinary wit. I may just be above celebrities in my ability to observe fleeting things and observe them carefully.

-Darwin

Books don't tell people its use, and the wisdom of using books is not in books, but outside them, all by observation.

bacon

Independent thinking ability is an essential ability for scientific research and invention. Any important scientific creation and invention in history cannot be separated from the inventor's independent and in-depth solution to the problem. ——

Hua

Thinking is my infinite country, and words are my props with wings. Schiller

Not only can we learn knowledge from observation, but knowledge can also take the initiative in observation, and knowledge can "enter turnover" with the help of observation, just like using tools in labor. If review is the mother of learning, then observation is the mother of thinking and memorizing knowledge. A student with keen observation will never be a student with poor academic performance, nor will he be a student with no understanding of arts and sciences. ——

Suhomlinski

Scientific inspiration is by no means something that can wait. If there is any accidental opportunity for scientific discovery, then this "accidental opportunity" can only be given to educated people, people who are good at independent thinking, and people who have perseverance, not to lazy people. ——

Hua

Keen observation, diligent thinking, good at synthesis and innovation. -Song Shuhe