A recent one from Linux Weekly News that gives insight into rationality:
Side note: when a respected information source covers something where you have on-the-ground experience, the result is often to make you wonder how much fecal matter you've swallowed in areas outside your own expertise. -- Rusty Russell
This was the original sense of TVTropes/DanBrowned, although the scope seems to have broadened a bit.
This is our monthly thread for collecting these little gems and pearls of wisdom, rationality-related quotes you've seen recently, or had stored in your quotesfile for ages, and which might be handy to link to in one of our discussions.