I believe X. — “A strong emotional attachment, which might be can be fine for values, is a rationality no-no for factual beliefs, especially controversial ones.”

If you feel tempted to say “I believe X” and can feel your emotions swell with the evil pleasure of attachment via belief, watch out!  Beware that road to rationality ruin.

“People rarely use “I value X” as a roundabout way to express a factual belief.  So their frequently saying “I believe X” as a way to express values seems to me further evidence that people often see values not as irreducible differing preferences, but as conditional values that we would share were it not for differing fact-like beliefs.  That is, we can imagine possible worlds in which the other values would make sense, but we believe we are not in those worlds.”