Books are the ladder of human progress. This is Gorky's famous saying, which compares books to the ladder of human progress, meaning that human progress cannot be separated from books, which provide a lot of knowledge and experience for human beings.

There are similar famous sayings:

1. Books are the presidents of human knowledge.

2. People's influence is short and weak, while books' influence is extensive and far-reaching.

3. An ideal book is the key to wisdom.

4. Books are lighthouses standing in the Wang Yang sea of time.

5. A person who loves books will not lack a loyal friend, a good teacher, a lovely companion and a warm comforter.

6. Books are friends. Although they are not enthusiastic, they are very loyal.

7. Books are inseparable life companions and mentors for young people.

8. Books are the nourishment of the whole world. Life without books is like life without sunshine. Wisdom without books is like a bird without wings.

9. Books are tools to cultivate the soul.