All the world’s a stage, And all the men and women merely players;
They have their exits and their entrances,
And one man in his time plays many parts,
His acts being seven stages.

Based on this excerpt, what is the main idea of this poem?

The main idea of the poem is that the life is similar to a drama where every individual is playing a specific role.

Explanation:

In the sonnet "All the World's a Stage", Shakespeare presents a comparison between the functioning of the world and the lives of the human beings. He demonstrates the world to be a stage, where every individual plays a specific role. Every individual is born and has a specific time for death. This is compared with the entry and exit of the actors on the stage. The roles that the actor play in the drama is similar to the roles that an individual plays in his life.