I felt that one of the major issues in the third film is that Luke is finally on his own and has to fight Vader and the Emperor by himself. If you get a sense that Yoda or Ben is there to help him or to somehow influence him, it diminishes the power of the scene.
George LucasOne of the amazing things about 'Seven Samurai' is that there are a lot of characters. And considering you have so many, and they all have shaved heads, and you've got good guys and bad guys and peasants, you get to understand a lot of them without too much being said.
George LucasThe secret is not to give up hope. It's very hard not to because if you're really doing something worthwhile I think you will be pushed to the brink of hopelessness before you come through the other side.
George LucasYou have to find something that you love enough to be able to take risks, jump over the hurdles and break through the brick walls that are always going to be placed in front of you. If you don't have that kind of feeling for what it is you're doing, you'll stop at the first giant hurdle.
George Lucas