3Henry David Thoreau,Walden,Princeton:Princeton University Press,1971,p.31.
4Henry David Thoreau,Walden,Princeton:Princeton University Press,1971,pp.19,31-32.
5Sinclair Lewis,"One Man Revolution",Laurie Lanzen Harris (ed.),Nineteenth-Century Literature Criticism,Vol.7,Detroit:Gale Research Co.,1984,p.379.
6Lawrence Buell,The Environmental Imagination:Thoreau,Nature Writing,and the Formation of American Culture,Cambridge,Massachusetts:The Belknap Press of Harvard University Press,1996,p.139.
7Henry David Thoreau,Walden,Princeton:Princeton University Press,1971,pp.5,6,153,37,8.
8Henry David Thoreau,Walden,Princeton:Princeton University Press,1971,pp.24,36.
9Henry David Thoreau,Walden,Princeton:Princeton University Press,1971,pp.33-34.
10Jonathan Bate,The Song of the Earth,Cambridge MA:Harvard University Press,2000,pp.279-280.
