originally breathed into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved.” Most recent criticisms have been leveled at Callicott's works addressing the idea of wilderness, the sanctum sanctorum of the twentieth-century environmental movement. Some scholars acknowledge the intellectual merits of Callicott's critique of the wilderness idea, but regard it as both a betrayal of one of Aldo Leopold's most cherished causes and as giving aid and comfort to the environmental movement's enemies. Callicott counters that his quarrel is with an idea, not the places trammeled by the idea, the preservation of which places he appears to be as ardently supportive as any other environmentalist. In “Should Wilderness Areas Become Biodiversity Reserves,” he argues that the pressing conservation needs of the twenty-first century are better served by the biodiversity-reserve idea. This idea indicates by its very name what the primary goal of wildland preservation is, whereas the wilderness idea is historically associated with outdoor recreation and thus, Callicott claims, confuses the preservation issue and fosters incoherent and contradictory wildlands-use policies. Selected publications Callicott, J. Baird, ed. (1987). Companion to A Sand County Almanac: Interpretive and Critical Essays. Madison: University of Wisconsin Press. . Callicott, J. Baird (1989). In Defense of the Land Ethic: Essays in Environmental Philosophy. Albany: State University of New York Press. . Callicott, J. Baird and Roger T. Ames, eds. (1989). Nature in Asian Traditions of Thought: Essays in Environmental Philosophy. Albany: State University of New York Press. . Flader, Susan L. and J. Baird Callicott (1991). The River of the Mother of God and Other Essays by Aldo Leopold. Madison: University of Wisconsin Press. . Zimmerman, Michael, ed.; J. Baird Callicott, George Sessions, Karen Warren, and John Clark, assoc. eds. (1993). Environmental Philosophy: From Animal Rights to Radical Ecology. Englewood Cliffs, NJ: Prentice-Hall. . Callicott, J. Baird (1994). Earth's Insights: A Multicultural Survey of Ecological Ethics from the Mediterranean Basin to Australian Outback. Berkeley: University of California Press. . Callicott, J. Baird and Fernando J. R. da Rocha, eds. (1996). Earth Summit Ethics: Toward a Reconstructive Postmodern Philosophy of Environmental Education. Albany: State University of New York Press. . Callicott, J. Baird and Michael P. Nelson, eds. (1998). The Great New Wilderness Debate. Athens: University