The poem is dealing with the division of the human mind. As a traveler on the road of life, Robert Frost wants to join two different roads, but he can only choose one of them. He chooses the one less traveled, and that makes all the difference. By this he is telling us that we should try out for new roads and new paths in life. The poem is loaded with rhythm, metaphors and greatness
http://zhidao.baidu.com/question/654550.html