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Do not quote yourself.
Do not quote from Less Wrong itself, HPMoR, Eliezer Yudkowsky, or Robin Hanson. If you'd like to revive an old quote from one of those sources, please do so here.
No more than 5 quotes per person per monthly thread, please.
If you're interested in the history of how science can be lost, you may also be interested in The Forgotten Revolution: How Science Was Born in 300 BC and Why It Had to Be Reborn by Lucio Russo.
Another month has passed and here is a new rationality quotes thread. The usual rules are: