Poem

I read a collection of poems that are characterized by short verses. There was an impressive passage. The title is River Stone, Mountain Stone. "If you pick up a mountain stone and throw it in the river, it becomes a river stone. If you pick up a river stone and throw it in the mountain, it becomes a mountain stone."
Our lives are the same. People live by adapting to their environment. Just as a mountain stone becomes a river stone, and a river stone becomes a mountain stone...