Deleuze Gilles; Democritus; De Morgan Augustus; Dennett Daniel C.; Derrida Jacques; Descartes Rene; Dewey John; d'Holbach Paul-Henri-Dietrich; Diderot Denis; Dilthey Wilhelm; Du Bois William Edward Burghardt; Duhem Pierre M.M.; Dummett Michael A.E.; Durkheim Emile; Dworkin Ronald Myles;