Richard SylvanRichard Sylvan (né Routley) was Senior Research Fellow in the Philosophy Programs at the Australian National University, where he linked the 'deep-green'-theory of environmental philosophy for which he is most widely known to an astonishing range of ork in metaphysics, semantics, logic and value theory. He died suddenly in 1996 at the age of 60, when he had just completed this major text. But though this volume is the mature expression of one of our foremost modem philosophers, it remains, like all his work, pioneering, eclectic and controversial. Read More Read Less