http://www.quotationspage.com/quotes/John_Muir

http://www.goodreads.com/work/quotes/2361393-walden

http://www.world-religion-watch.org/index.php/book-reviews-on-relevant-religious-and-cultural-issues/178-nature-by-ralph-waldo-emerson-transcendentalism-at-the-core-of-american-identity

http://www.brainyquote.com/quotes/authors/r/ralph_waldo_emerson.html

http://www.quotationspage.com/quotes/Walt_Whitman

http://www.goodreads.com/author/quotes/113907.Margaret_Fuller

http://www.goodreads.com/work/quotes/2361393-walden

Work Cited