Callicott's comparative environmental philosophy also involves a tightrope walk between pluralism and monism. In "Earth’s Insights: A Multicultural Survey of Ecological Ethics from the Mediterranean Basin to the Australian Outback", he seems to embrace pluralism by exploring the conceptual resources for environmental ethics in a wide variety of religious and indigenous worldviews. This work has been criticized, however, for privileging the Leopold land ethic as a norm in reference to which such alternative environmental ethics are evaluated. As Andrew Light observes, Callicott does not insist that the Leopold land ethic is based on the uniquely true worldview of evolutionary biology and ecology. He agrees with multicultural pluralists that the evolutionary-ecological worldview is but one story among many stories. But he does argue that the worldview of evolutionary biology and ecology is more tenable than any other, that the evolutionary-ecological epic is a better story than any other grand narrative.