William Shakespeare's Sonnet 18 praises the youthful beauty and positive qualities of a young man. The speaker claims this person is more beautiful than a summer's day, which is imperfect due to strong winds, heat, and brevity. Though all earthly beauty fades with time, the speaker asserts the young man's beauty will be eternal and immortalized through the poem itself. As long as the poem continues to be read, the memory and excellence of the young man will live on.