Forest Ranger in Arizona and New Mexico in the Early

Forest ranger in Arizona and New Mexico in the early 1900s who advocated preservation of nature's integrity. He wrote, "to keep every cog and wheel is the first precaution of intelligent tinkering."

A) Henry David Thoreau
B) Roderick Nash
C) Rachel Carson
D) Gifford Pinchot
E) Aldo Leopold
F) Immanuel Kant
G) Jeremy Bentham
H) John Ruskin
I) John Muir