Life in a box
... The setting described in the last three lines using words such as struggle, flight, clash, and darkling plan allows the reader to understand the confusion in the couples life Where Browning uses the setting to reveal the characters greed and cruelty, Arnold uses the setting in “Dover Beach” to expose the lover’s struggle in their relationship. ... This is a way Arnold causes the narrator to give life and emotion to "Dover Beach" by the flow of words such as "pebbles which the waves draw back, and fling," giving the reader a sense of motion, and the feel of the sea close by.