 The standard answer to this question is that the difference lies in the subject matter. Quine asks, “why does it [Russell’s paradox] count as an antinomy and the barber paradox not?”; and he answers, “The reason is that there has been in our habits of thought an overwhelming presumption of there being such a class but no presumption of there being such a barber” (1966, 14). Even so, psychological talk of “habits of thought” is not particularly illuminating. More to the point, Russell’s paradox sensibly gives rise to the question of what sets there are; but it is nonsense to wonder, on such grounds as T269, what barbers or Gods there are! 