"Semiotics." . . . "Descartes & Poinsot the crossroad of signs and ideas" . "History" . . . . . . . . . "Descartes & Poinsot : the crossroad of signs and ideas : contrasting the way of signs to the way of ideas, semiotics to epistemology" . . "Descartes & Poinsot : the crossroad of signs and ideas" . . . . . "Descartes and Poinsot" . . . . . . "Erkenntnistheorie." . . . . "Semiotik." . . "Sémiotique Histoire." . . "Semiotics History." . .