What emotion does john donne express?

Song of John Donne expresses the conflict between emotion and desire and the attitude towards love. The "sweetness" and "salt" in the poem symbolize the sweet words and betrayal promises of women. After feeling the sweetness and deception of women, men realize that their desires may bring pain, so they feel troubled and uneasy. The last sentence "I will die, but I don't know when" expresses men's contradictions and doubts about love and life. The whole poem reflects the uncertainty of love, the fragility of human nature and the attitude towards love.