The website lists the author's purported name as Joel Grus.
Otherwise, he is that cliche: a riddle, wrapped in a mystery, inside an enigma. Perhaps he's a would-be cult-leader, a narcissistic attention whore salivating at the imminent adulation of groupies of, er, thoughtful people. Hence his self-conscious restraint.
It's more likely the author is in fact a group of people, a collaborative effort. Otherwise the next-best explanation is a lone individual impossibly fathered, illegitimate and anachronistic, by Mark Twain and Woody Allen. Thankfully in his work, Grus more resembles the father.