From 'Commentaries on the laws of England'(1803 edition) / William Blackstone -- Concessions tot he Province of Pennsylvania(1681) / William Penn -- From 'An account of the newly invented Pennsylvanian fire-places (1744) / Benjamin Franklin -- From 'Travels into North America' (1753)/ Peter Kalm -- From 'Notes on the State of Virginia' (1787) / Thomas Jefferson -- From 'Travels through North and South Carolina, Georgia, East and West Florida, etc' (1791) / William Bartram -- Red Jacket's reply to Reverend Cram (1809) / Red Jacket (Segoyewatha) -- From "The American Scholar" (1837) / Ralph Walda Emerson -- From 'Letters and notes of the manners, customs, and condition of the North American Indians (1841) / George Catlin -- From "Chesuncook" (1858) / Henry David Thoreau -- From 'Man and nature' (1864) / George Perkins Marsh -- "The utility of trees" (1865) / William Cullen Bryant -- "god's first temples: how shall we preserve our forests?" (1876) / John Muir -- "The faith of a naturalist," from 'Accepting the universe' (1920) / John Burroughs -- "Forever Wild" provision of the New York State Constitution (Constitutional Convention of 1894) -- Governor's annual message to the State of New York (1900): From his first Annual Message as President (December 3, 1901) / Theodore Roosevelt -- "Principles of conservation," from 'The Fight for conservation' (1910) / Gifford Pinchot -- "The problem of the wilderness" / Robert Marshall -- "Threatened species" (1936) : "The land ethic," from 'A Sand Country Almanac' (1949) / Aldo Leopold -- "The obligation to endure," from 'Silent spring' (1962) / Rachel Carson -- The wilderness act (1964) -- "The historical roots of our ecologic crisis" (1967) / Lynn White, jr. -- "the tragedy of the commons" (1968) / Garrett Hardin -- Sierra Club v. Morton (1972) -- "Freedom and wilderness, wilderness and freedom" (1977) / Edward Abbey -- Statement to the annual Meeting of Occidental petroleum share holders; coroporate responsibility resolution (May 21, 1980) / Luella N. Kenny -- "Ritual is essential: seeing ritual and ceremony as sophisticated social and spiritual technology" (1984) / Dolores LaChapelle -- "The deep ecological movement: some philosophical aspects" (1986) / Arne Naess -- "Executive summary" from 'Toxic wastes and race in the United States' (1987) / United Church of Christ Commission for Racial Justice -- "The environmental ethic," from 'The diversity of life' (1992) / Edward O. Wilson -- Kyoto Protocol to the United Nations Framework Convention on climate change / The Kyoto Protocol -- "The seventh generation," from 'All our relations: native struggles for land and life' (1999) / Winona LaDuke