Final answer:
One of the main themes throughout many of the poems by Transtromer is the exploration of the human experience and the existential questions it poses. He often delves into themes of identity, memory, nature, and the mysteries of life.
Step-by-step explanation:
The main theme throughout many of the poems by Transtromer is difficult to pinpoint, as his poems cover a range of subjects and emotions. However, a recurring theme in Transtromer's work is the exploration of the human experience and the existential questions it poses. He often delves into themes of identity, memory, nature, and the mysteries of life. For example, in his poem 'Baltics,' Transtromer explores the theme of memory and how it shapes our understanding of the world. The poem talks about the memories of a childhood journey and the longing to return to that time and place. Another example is his poem 'The Deleted Hand,' which touches on the theme of identity and the fear of losing oneself.