Feynman, with his curiosity and growth mind-set, certainly saw no shame in admitting his own limitations—and welcomed this intellectual humility in others. “I can live with doubt, and uncertainty, and not knowing. I think it’s much more interesting to live not knowing anything than to have answers which might be wrong,” he told the BBC in 1981. “I have approximate answers, and possible beliefs, and different degrees of certainty about different things, but I’m not absolutely sure of anything.”44

