Donald Richie's Focus on Rashomon is worth reading, if your library has it. 

When Kurosawa's assistant directors couldn't understand the script and wanted an explanation, he told them, "Human beings are unable to be honest with themselves about themselves. They cannot talk about themselves without embellishing…You say that you can't understand this script at all, but that is because the human heart itself is impossible to understand. If you focus on the impossibility of truly understanding human psychology and read the script one more time, I think you will grasp the point of it."
