John Muller is Director of Education at the Austen Riggs Center. He is coeditor of The Purloined Poe: Lacan, Derrida, and Psychoanalytic Reading (also available from Johns Hopkins University Press) and the author of Beyond the Psychoanalytic Dyad: Developmental Semiotics in Freud, Peirce, and Lacan. Joseph Brent is the author of Charles Sanders Peirce: A Life.