Learn to control ego. Humans hold their dogmas and biases too tightly, and we only think that our opponents are dogmatic! But we all need criticism. Criticism is the only known antidote to error.
David BrinScience has learned recently that contempt and indignation are addictive mental states. I mean physically and chemically addictive. Literally! People who are self-righteous a lot are apparently doping themselves rhythmically with auto-secreted surges of dopamine, endorphins and enkephalins. Didn't you ever ask yourself why indignation feels so good?
David Brin