This line reminds me of the idea of reincarnation.

When I read this poem instantly I thought of someone passing away. For me, this line represents what is on the other side of death. This is the big question of, "is there life after death?" I like the line, "not every man knows" because it insinuates that some people do know what comes after death. Although, none of us truly know. Every person has a version of what "the end" for us looks like. Is there just an end? Or does life go on after death, one way or another?