I just noticed this thread .. so I might have posted this on the wrong thread before (I think Makis reposted the query here on the other thread - and confused me - never mind ! ).
Take this with a grain of salt - this is how I interpret it, based on what I understood, anyway, and hopefully I haven't missed an important detail.
Just as his subject (Bergman) had resorted to a distant memory of a strawberry field to derive a positive outlook and some meaning and happiness in his life, in his later years ; the author finds himself similarly thinking about his own happiness and is drawn back to his youth and his own personal "strawberry patch". For the author however this elicits an admixture of memories, some happy memories are interfused with painful ones - frustratingly, he can't select the happy memories and filter out the bad ones, i.e., a "personae" (as per Jung) of disguised, masked memories, some seemingly happy at first, but masking a barbed tail, in reality, are disturbingly released.
Consequently the author asks himself - will Pythia, the oracle and westerner in himself (I think he likens himself to the Greek oracle, as he peers back through a prism of memories and re-evaluates his life, as he seeks wisdom) take what he has learned from his own disturbing introspective and retrospective experience and turn it into an important philosophical work ; one that will provide some valuable insights and an enlightening path, like Abhisamaya ?