"What then is the intellectual advantage of civilization over primitive savagery? It is not necessarily that each civilized man has more knowledge but that he requires far less."
"Thousands of tired, nerve-shaken, over-civilized people are beginning to find out that going to the mountains is going home; that wildness is a necessity"
"The history of which peoples, nations, or civilizations have conquered or enslaved which other peoples, nations, or civilizations has been largely a history of who has been in a position to do so."
"Each new generation born is in effect an invasion of civilization by little barbarians, who must be civilized before it is too late."
"Any time bombs are used to target civilians it is an act of terror."
"Be civil to all; sociable to many; familiar with few; friend to one; enemy to none."
"The making of gardens and parks goes on with civilization all over the world, and they increase both in size and number as their value is recognized."
"If you are not prepared to use force to defend civilization, then be prepared to accept barbarism."
"We have no right to prejudice another in his civil enjoyments because he is of another church."