Roy Ellen Roy Ellen was educated at the London School of Economics and is Professor of Anthropology and Human Ecology at the University of Kent at Canterbury, where he has taught since 1973. His numerous and varied publications include Environment, ubsistence and System (Cambridge University Press, 1982), The Cultural Relations of Classification (Cambridge University Press, 1993), and most recently, The Categorical Impulse (Berghahn Books, 2005). He convenes the Kent Programme in Ethnobotany and has published widely on indigenous knowledge. In 2003 he was elected to a fellowship of the British Academy. Read More Read Less