The poem The Brook by Alfred Tennyson describes the journey of a brook from its source among birds like coots and herns to joining a larger river. The poet draws parallels between the brook's journey and the stages of a human life from youth to old age. As the brook flows, it passes through hills, villages, farms and other landscapes at different paces depending on its surroundings, eventually slowing down as it nears the river, just as a human slows with age. The brook flows on forever while humans have finite lives.