"When I first met him personally, I wondered what his biases and prejudices really were and tried to identify them for many years. My effort was wasted. I finally came to the conclusion that he just doesn't have any. I think this may be a point that is impossible for his critics to understand. On the other hand, it is the very reason he has stood up so well against his critics. He has invested himself in pursuit of the truth, not any particular set of ideas. … He would gladly know the truth even if it proved him wrong."