“The first - the most obvious (test of a true social entrepreneur) - is are they possessed, really possessed by an idea... The idea - making it happen across society - is something they are married to in the full sense of the word. One key test of that is this: Is this an idea that you see growing out of their whole life? I get very, very suspicious when I see someone who had an idea two years ago. It just doesn't ring true. Because with the typical entrepreneur you can see the roots of the interest when they're very young. There's a real coherence to people's lives.”