Another monthly installment of the rationality quotes thread. The usual rules apply:
Please post all quotes separately, so that they can be upvoted or downvoted separately. (If they are strongly related, reply to your own comments. If strongly ordered, then go ahead and post them together.)
Do not quote yourself.
Do not quote from Less Wrong itself, Overcoming Bias, or HPMoR.
No more than 5 quotes per person per monthly thread, please.
If each person counts as one for each time he dines, Alexander can only claim to have personally hosted the guests at his most recent meal; the others were guests of someone else.
Another monthly installment of the rationality quotes thread. The usual rules apply: