Cleverly paced narrative exploring the disintegration of a haunted man. This central character is brilliantly played. From the outset there is a hint of inner turmoil, despite the beautiful island setting.
One of the film's triumphs is that we are still able to feel sympathy for the tortured hero, a man completely out of synch with both the native islanders and the rich wasters who descend on the beaches in the summer. His pathetic attempt at redemption through an impossible desire is both tragic and inevitable.
Excellent story very well told.
Others see this as being about youth and middle age, but to me that's not the main point. The age gap only emphasises his problems
The 'hero' is a sad man, withdrawn, a 'nerd', somewhat autistic, probably damaged by a life of bad treatment by 'normal' people. At the start of the film he still functions as a doctor. A great light is shone into his life by contact with young pleasure seekers who accept him for while, the sun, closeness to nature, dancing and booze. This could go either way - it could be 'suntan', allowing him to blossom, or, as happens in the film, it could burn.
I would expect this and repeated rejection to cause a downward spiral of depression, alcohol and isolation, with slowly becoming less and less functional. But this is a movie, and his ending is more dramatic.