"One of the nice things about looking at a bear is that you know it spends 100 per cent of every minute of every day being a bear. It doesn't strive to become a better bear. It doesn't go to sleep thinking, "I wasn't really a very good bear today". They are just 100 per cent bear, whereas human beings feel we're not 100 per cent human, that we're always letting ourselves down. We're constantly striving towards something, to some fulfilment"