This is a nice poem about the importance of light and darkness. The characteristics of both are etched out. Darkness can make us feel low, while the light can energize us. The idea that a poem conveys is always important. Poetry is not always written to convey ideas but written based on moods and feelings. A good poetry conveys the right essence and meaning of what the poet feels. Light and dark are said to be cosmic brothers. This is true as we can experience both in our lives. It also makes us whole and complete.