The famous sayings about seriousness are as follows:

1. Study, study, and study again! Learn, then don’t know enough. ——Lenin

2. It is not difficult to master all the learning and knowledge in the world. As long as you study persistently, work hard to master the rules, and reach a familiar situation, you will be able to master it and use it freely. ——Gao Shiqi

3. Study hard and make progress every day.

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

5. For me, if you don’t learn, you’d rather die. ——Lomonosov

6. Young people must first establish ambitions and ambitions; secondly, they must measure their strength and determine to be a useful talent for the country and the people; for this, they must choose a struggle goals to study hard and practice. ——Wu Yuzhang

7. As long as your heart is still beating, you must study hard. ——Zhang Haidi