1, books are the ladder of human progress. This sentence tells us that reading can promote the progress of mankind, because the book contains the wisdom and experience of predecessors, and we can gain more knowledge and experience through reading, so as to better cope with various challenges in real life.

The harder life is, the stronger I feel. This sentence tells us that in the face of difficulties and setbacks in life, we should remain strong and courageous and not give up easily. Only through constant efforts and struggles can we overcome difficulties and achieve our goals.

Only human labor is sacred. This sentence tells us that what we get through our own labor is the most valuable, because it requires our efforts and sweat.

There is only one kind of heroism in the world, that is, people who know and love life. This sentence tells us that only those who know and love life are real heroes.

A person needs to have a goal in order to achieve a truly healthy and happy state. This sentence tells us that a person needs to have a clear goal to guide the direction, and only by constantly pursuing the goal can he realize his own value and significance.

Gorky's contribution:

1. Literary creation: Gorky's literary works cover novels, essays, poems and other forms. His works reflect the hardships and struggles of people's lives and show his profound understanding of Russian national spirit. One of his masterpieces is the novella Childhood, which reflects the reality of Russian society at the end of 19 by describing a child's growth experience. In addition, he also created autobiographical trilogy such as On Earth and My University, which reflected the changes of social history through his personal growth experience.

2. Literary theory: Gorky also made some contributions to literary theory. He advocates that literature and art should reflect people's lives and feelings, emphasizing the people's nature of art. He believes that literary and artistic works should truly express people's lives and emotions, and this authenticity and popularity is the standard to measure the value of works.

3. Political theory: Gorky actively participated in social and political activities, wrote a large number of political articles and declarations, and expressed his views and opinions on social and political issues. His political essays criticized the current disadvantages and called for reform, which played an important role in promoting social progress and ideological enlightenment.

4. Social activities: Gorky also actively participated in social welfare undertakings and paid attention to the rights and welfare of vulnerable groups. He founded some cultural groups and institutions, such as Gorky Theatre Academy and Moscow Art Theatre. It has made contributions to cultivating literary and artistic talents and promoting cultural undertakings.