I edited your post to delete the poem. You can't reprint more than two lines of a poem that is still under copyright. The rule of thumb is that a text is under copyright for the life of the author plus 75 years. After that time, copyright expires, and the work become public domain, meaning that anyone can reprint it. I know you didn't mean to infringe copyright; you want someone to explain the poem to you, and you were being helpful by providing it for us. We just can't do that. I'm going to search for the poem and will post an explanation later.