Books
Those who believe that they are exclusively in the right are generally those who achieve something.
— Aldous Huxley • Proper Studies (1927) 'Note on Dogma'

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker links accomplishment with the conviction that one alone is right. Such certainty can supply the confidence to act without hesitation. The observation leaves a tension between effectiveness and openness: getting results may depend on a mindset that gives competing views little room.
Context reviewed