Julia’s breakdown in the garden with Charles is one of the central scenes in the film. Having read Madresfield, and some biographical material on Waugh, I now understand where many key scenes came from. Julia’s drive from the station is based on Sibell collecting Waugh from Madresfield’s local station. Marchmain’s deathbed profession of faith is based on that of Herbert Duggan, Anthony Blanche’s declamation of the Wasteland is Harold Acton’s.
So now the question presents itself. Julia’s profession of faith in the garden is so moving and authentic, it can’t spring solely from the author’s imagination. Where does it come from ?