“The only part of an argument that really matters is what we think of the people arguing.”
Kim Stanley Robinson (1952) American science fiction writer
John Boone
Red Mars (1992)
Context: The only part of an argument that really matters is what we think of the people arguing. X claims a, Y claims b. They make arguments to support their claims with any number of points. But when their listeners remember the discussion, what matters is simply that X believes a and Y believes b. People then form their judgment on what they think of X and Y.