Charlie Chaplin - Let us all unite!

I suppose I have a minor quibble with this, since I don't think our problem is too much thinking! In fact, it's just the reverse. We have too much feeling - and too much believing without evidence - and not nearly enough thinking.

People don't hate because they think too much. People don't fly passenger planes into buildings because they think too much. People don't believe in Bronze Age mythology because they feel too little and think too much.

Of course, he makes up for that with "a world where science and progress will lead to all men's happiness." And it's a very minor quibble, anyway, isn't it? :)

Note that this is the guy - John D. Boswell, or melodysheep - who gave us that Al Gore "This Earth" remix and who does those Symphony of Science videos (like this one about the dinosaurs).