I'm still a one-sided person and don't know a great deal. I have a limited intelligence and I've used it in a particular direction. ~Feynman
Adam Rifkin stashed this in Caltech
Dunning-Kruger asserts that people of low intelligence overestimate how intelligent they are, and people of high intelligence underestimate. By all objective measures, Feynman was highly intelligent. He was not only a brilliant physicist, but was able to effectively communicate his understanding to laypeople and peers alike.
His admission is an example of underestimation.