"You see I can live with doubt and uncertaintly and not knowing. I think it's much more interesting to live not knowing than to have answers which might be wrong. I have approximate answers and possible beliefs and different degrees of certainty about different things, but I'm not absolutely sure of anything and many things I don't know anything about! ... I don't have to know an answer. I don't feel frightened by not knowing things."
Dr. RP Feynman, Nobel Laureate and preeminent physicist, from the documentary "The pleasure of finding things out."