"The gross heathenism of civilization has generally destroyed nature, and poetry, and all that is spiritual"

"Peace is the virtue of civilization. War is its crime"

"The art of medicine consists in amusing the patient while nature cures the disease"

"America is the only country that went from barbarism to decadence without civilization in between"

"We cannot command Nature except by obeying her"

"Nature and wisdom never are at strife"

"He loves nature in spite of what it did to him"

"Where is human nature so weak as in the bookstore?"

"The sound of the human voice is the best of nature but only if it comes out from the feelings"

"Impart as much as you can of your spiritual being to those who are on the road with you, and accept as something precious what comes back to you from them"

"Civilization begins with order, grows with liberty and dies with chaos"