Leaves of Grass is a work with extensive materials and rich contents. There are praises to American democracy and freedom, attacks on slavery, farm serfs and agricultural slavery, praises to American magnificent rivers and mountains, and praises to ordinary Americans. In a word, Leaves of Grass mainly records American history with poems. The poet named his work Leaves of Grass in order to describe more ordinary people.
Grass symbolizes ordinary things and ordinary people, so the poet will write his own understanding of ordinary people and ordinary things in the whole work. For example, in several articles, from Bamenoch to For You, Ah, Democracy, poets regard America as the embodiment of democracy. He enthusiastically praised them, praised them and enthusiastically called on people to find the road to democracy and freedom. Another example is "Bold Song" and "I hear America singing". His main purpose is to praise the hard work of workers and let people know the melody of workers. These poems and the full text can feel the author's praise for ordinary workers.
The poet believes that everyone's body is pure and sacred, so there should be a more harmonious and unified relationship between man and nature. He wrote this work mainly on behalf of ordinary people living at the bottom.
The above story only represents my personal opinion. Please forgive me if there is any mistake.