A smart man makes a mistake, learns from it, and never makes that mistake again. But a wise man finds a smart man and learns from him how to avoid the mistake altogether. – Roy H. Williams

The doctrine of human equality reposes on this: that there is no man really clever who has not found that he is stupid. – G. K. Chesterton

It occurred to me that there was no difference between men, in intelligence or race, so profound as the difference between the sick and the well. – F. Scott Fitzgerald