I will repeat this point again until I get hoarse: a mistake is not something to be determined after the fact, but in the light of the information until that point. —Nicholas Nassim Taleb
This is something I actively remind myself whenever my intuition starts feeling vindication over lucky reprieves or mourning low probability misfortunes. "It's ok, a six wasn't rolled anyway. I made a mistake. It would have been better to trade the wood and build a settlement. I want to become stronger." (The hyperlink is included instead of the phrase. The inner dialog doesn't like wordiness!)
A monthly thread for posting rationality-related quotes you've seen recently (or had stored in your quotesfile for ages).