outside+that+system+and+hence+unspeakable

"Unspeakable" may have been something of an overstatement. Here's what I was thinking of, in (to speak metaphorically) a nutshell:



http://books.google.com/books?id=x36qPMLzOdsC&pg=PR26&lpg=PR26&dq=concept+metaphor+derrida&source=bl&ots=iQkffkJRI4&sig=YNHKlWrXY957wbR6Qn_qRoM-hPg&hl=en&ei=uTDmTumDGafy0gGW7In7Bw&sa=X&oi=book_result&ct=result&resnum=5&ved=0CD4Q6AEwBA#v=onepage&q=concept%20metaphor%20derrida&f=false