This part hurts the most:
We are all proud. Because I’m proud I get hurt when people disagree with me strongly. Because I’m proud I feel the need to give thirteen qualifications before I make an argument, not usually because I’m a swell guy but because I love for people to love me and loathe for them to dislike or misunderstand me. Because I’m proud I hedge my criticisms so that I won’t have to publicly repent and recant when I go too far and get something wrong. Because we’re proud, protectors of self more than lovers of truth, we often don’t discuss things with candor or with verve.
Read the whole thing—esp. the last four paragraphs.