As usual with Malick, this movie resembles a stream of consciousness, a philosophical quest for meaning in life.
The key player is a man who lost his purpose, left his wife, and in his search for a forgotten sense surrounds himself with surrogates, in the form of wealth, sex, parties, very beautiful women, but all this distracts him while the lack of sense is always there in the background.
The lost beauty in the soul/self contrasts with the beauty of images, typical in Malick's cinema.