Sonnet 30 picks up on the theme of Sonnet 29 and develops the 'sweet love' remembered there into a reminiscence about lost love, missed opportunity and failed aspirations, among which again it is the thought of the young man that has the power, here not so much to simply lift the spirit and therefore the state of mind and heart, but to restore the losses suffered and to end the sorrows they have brought – to, in essence, heal.
