Parenthetically: "As for the whole existing race of philosophers, say John Dewey, to mention a relatively superior man whom you see, why they are the sort of trash who are puzzled by Achilles and the Tortoise! Think of trying to drive any exact thought through such skulls! Royce is the only philosopher I know of real power of thought now living."
Achilles and Tortoise, Dewey John, Mathematics, ordinal notation and analysis, Ordinals, Royce Josiah
pp. 4-6 19-22 and 1 p. (the number of which is missing).