1. Background: The writing time of this poem can be traced back to India in the early 20th century, when it was in the torrent of a national independence movement. Indian people yearned for freedom and independence, and Tagore's writing was deeply influenced by the social background at that time.
2. Personal experience: When Tagore wrote this poem, he was deeply hit by the death of his loved ones, and at the same time he was thinking about the meaning and value of life, so he also had some personal emotional experiences in his creation.
3. Cultural background: Tagore is a representative figure of Indian culture, and his creation is influenced by Hinduism and traditional Indian philosophy, including thinking about the meaning of life, the universe and God.