I think I understand the rationale behind the original quote: Being wrong feels awful, so you should try to be right as often as possible. But this emotional response also disincentivizes attempts to stick your neck out on behalf of your existing beliefs.

I agree that this is a dangerous use of the original quote, which I admitted can be put to both good and bad uses.

I probably shouldn't have invoked you and definitely shouldn't have used "emotionless."