The effect of repetition throughout this poem informs the reader of the writer's strong feelings regarding the issue. He want to warn us that we should not go quietly into that good night without a struggle. Repitition adds to the meaning since it demonstrates how passionately he feels. Goosebumps have appeared on many skin surfaces when reading this piece of poetry. Repetition has been used effectively by Poe to create fear and anxiety in his readers. As you can see, this technique is very powerful and can be used in writing to attract attention or make your point clear.