  Sylvan saw his ethics as systematically connected with issues in social and political philosophy, extending out from “deep green ethics” to a broader “deep green theory” that “includes a radical social and political theory, centred upon social anarchistic forms of organization … and elements of radical economic theory … There have to be changes in social and political arrangements … towards less consumptive, populous and wasteful societies, and so on” (Sylvan and Bennett 1994, 151).