Today we're dumping 70 million tons of global-warming pollution into the environment, and tomorrow we will dump more, and there is no effective worldwide response. Until we start sharply reducing global-warming pollution, I will feel that I have failed.
I'm not saying that I made a film to make young people feel great, not such a simple message, but I really felt that I will not go back to do something depressing. I had to make something happy and funny, and show that there are always many ways to continue - even when you're feeling ugly, or you are forgotten by your parents.