Another month has passed and here is a new rationality quotes thread. The usual rules are:
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Do not quote yourself.
Do not quote from Less Wrong itself, HPMoR, Eliezer Yudkowsky, or Robin Hanson.
No more than 5 quotes per person per monthly thread, please.
It's true that people sometimes behave instrumentally-irrationally in the sense that they don't take the correct steps to reach their goal of happiness. But that fact, alone, is relatively weak evidence: people are a little irrational, not completely wrong about what makes them happy.
Your reply can be read very generally ("behavior is not always rational, therefore it's not positively correlated with desired results"). Please specify what you meant more precisely.
Another month has passed and here is a new rationality quotes thread. The usual rules are: