1. When talking to friends, you can not pay attention, but when facing the enemy, you must be alert-Lu Xun.

2. If you want to see the truth, you should pay attention everywhere-Fan Song.

3. Pay attention everywhere, and you will learn-China.

4. Careful observation of small things is the secret of success in career, art, science and life-Smyer.

5. Pay attention to everything, read more books, and write when you can't see anything-Lu Xun.

6. Observe, observe and observe again-Pavlov

7. Details lie in observation, and success lies in accumulation-Emerson.