Here's another installment of rationality quotes. 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Do not quote yourself.
Do not quote from Less Wrong itself, Overcoming Bias, or HPMoR.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.
The memetic evolution of baroque music in Europe is a development towards learnability? There are probably no more than 100 people alive that can make their way through Bach's 2nd Partita for violin.
Here's another installment of rationality quotes. The usual rules apply: