I think he also paraphrased a quote I like fairly well. I don't feel like reading that whole paid-by-the-word essay again, but it goes along the lines of "reality is the thing that exists whether or not we believe in it." A reasonable analogy would be "truth is the thing that is accurate regardless of our opinion about it." I am obviously unfairly dismissing relativism outside of a particular range of variation since to do otherwise makes most discussions about anything pointless.