A few things one can learn from this movie (spoilers):
1) When the famous actor of an old generation makes terrible grimaces popping his eyes out and making his mouth looking as a huge slot – it means that his character is in a fit of anger!
2) After the father murders his own injured son in hospital and goes away, his silhouette may slowly disappear into heavenly radiance…
3) It’s rather natural for a devastated widower to lynch his own injured son for the sake of his beloved late wife.
4) When you’re going to the lowlife blackmailer's house with the intent of killing him – take the money with you, for you should pay the ransom so & so.
5) It’s rather natural for the people who are broke to live a posh life.
6) Author's moral defects usually declare itself as an artistic failure.
Thank God, I'm an Atheist! - Luis Bunuel