http://hwcdn.libsyn.com/p/c/0/e/c0e3da8258b8b403/pft022.mp3?c_id=11189604&expiration=1457628185&hwt=371b3c75bc47ce3a7223d4f6fdf80d0c
lovely intro to some early bits of Derrida by http://christopherwatkin.com/, thanks to @AimeTim for the link