All 5 Uses

Henry David Thoreau
in
Into the Wild
(Edited)

McCandless could endeavor to explain that he answered to statutes of a higher order, that as a latter-day adherent of Henry David Thoreau, he took as gospel the essay "On the Duty of Civil Disobedience" and thus considered it his moral responsibility to flout the laws of the state.
p. 28.8 *

Henry David Thoreau = U.S. writer best remembered for his book, Walden and his essay Civil Disobedience (1817-1862)
Henry David Thoreau, Walden, or Life in the Woods -- passage highlighted
p. 47.7
Henry David Thoreau, Walden, or Life in the Woods -- passage highlighted
p. 117.3
That rocky, misty summit, secreted in the clouds, was far more thrillingly awful and sublime than the crater of a volcano spouting fire.
--Henry David Thoreau, Journal
p. 133.9
Talk of mysteries! Think of our life in nature,—daily to be shown matter, to come in contact with it,—rocks, trees, wind on our cheeks! the solid earth! the actual world! the common sense! Contact! Contact! Who are we? where are we?
--Henry David Thoreau, "Ktaadn"
p. 172.9

Definitions:

(1) (Henry David Thoreau)
U.S. writer best remembered for his book, Walden and his essay Civil Disobedience; most politically conscious of the Transcendentalists (1817-1862)
(2) (meaning too rare to warrant focus)