In the movie River runs through it Paul has learned that his brother has changed his lifestyle and he will have to accept that. When the boys were kids they didn 't have to worry about a care in the world but as they grow up that soon has to stop. Paul the older son went to college and the younger brother became a writer for the newspaper. Paul came back four years later and his brother smokes, drinks, fights and gambles but he doesn 't say much because its his brother and he loves him. This is why it 's important not to judge someone and just grow to accept their decisions. The reason why accept is important in the movie the River runs through it is because people will change no matter what. In the movie River runs through it the boys start