1. There is a long time between today and tomorrow; while you still have energy, learn to do things quickly. ——Goethe

2. Learning does not matter whether someone teaches you. The most important thing is whether you have awareness and perseverance.——Fabre

3. Learning The enemy is one's own satisfaction. If you want to learn something seriously, you must start from being dissatisfied. We should adopt this attitude towards ourselves, "never tired of learning" and "never tired of teaching" towards others. ——Mao Zedong

4. A person not only relies on everything he is born with, but also relies on everything he gets from learning to cultivate himself. ——Goethe

5. Knowledge is as precious as human blood. If a person lacks blood, his body will be weak; if a person lacks knowledge, his mind will dry up. ——Gao Shiqi

6. Reading in a young age is like gazing at the moon through a gap; reading in middle age is like looking at the moon in a courtyard; reading in old age is like playing with the moon on the stage. All are based on the depth of experience and the depth of what is gained. ——Zhang Chao

7. When the book is used, it will be less regrettable. ——Lu You

Youth is a time for learning wisdom, and middle age is a time for putting it into practice. ——Rousseau