I don't feel particularly comfortable about actors using whatever power they may have to push their beliefs, unless they're extremely well informed.
It's a marvellous life, a gregarious life that we've had. We're very lucky in that way. Unlike writers or painters, we don't sit down in front of a blank canvas and say, 'How do I start? Where do I start?'
Knowing is not understanding. There is a great difference between knowing and understanding: you can know a lot about something and not really understand it.