I think you would have done better quoting just the second sentence, which is indeed a sharp rationality quote and needs no context to be appreciated. To include the previous sentence is just inviting downvotes for politics-is-the-mindkiller reasons. (Both in the plain level that conservatives might confuse it for "rah liberals" quote, and in the meta level that some people dislike any mention of ordinary politics in LW regardless of sides.)
I originally had just the second sentence, but I thought that the "making yourself right" phrase was too ambiguous (it allowed for the interpretation "correcting yourself" as well as "justifying current beliefs despite evidence"). The first sentence provided context, but then excerpting the problematic political view felt too much like editing, especially considering the contentious allegation was already in the URL. My apologies.
Completely different topic, but is there a cheat-sheet for how to format comments for bold and italics? I would have liked to bring the focus (2nd sentence) of my quote to the forefront.
Here's the new thread for posting quotes, with the usual rules: