Sonnet 18 by William Shakespeare is poem where the persona who is immensely in love with his beloved, deeply admires his love and compares her with summer. The comparison is done based on the beauty of summer’s day and its wonders.
However, the persona finds his belove being more beautiful than summer and its elements; the sun, flowers, nature’s movements, and the summer of his heart and life is and will be forever beautiful and warm.
Besides that his beloved’s beauty is eternal. Life is full of meaning to the persona as the beauty of his life remains forever. Even as summer fades, the love of his life will remain intact as long as people are alive to read and appreciate the beauty of his beloved in the poem.
the theme of this poem is immortalising beauty and love which is reflected by the persona’s thoughts, ideas &; feelings, captured magically and embodied in the sonnet, revealing his beloved’s internal beauty which is everlasting as long as people kept on reading it with appreciation.
As we know, tone refers to the feelings, attitudes perceptions and experiences of the persona. Since in sonnet 18, the persona feels deep admiration for his beloved as he compares two elements of nature: the season and his beloved, therefore he has high-spirits and he has a positive outlook on life. He believes his beloved is an eternal beauty and faces no death, as she is immortal through the poem. The persona is hopeful, happy and forward-looking.