“It is our task in our times in our generation to hand down undiminished to those who come after us, as was handed down to us by those who went before, the natural wealth and beauty which is ours.”
- President John F. Kennedy 

 “Each generation has its own rendezvous with the land, for despite fee  titles and claims of ownership, we are all brief tenants on this planet.  By choice, or by default, we will carve out a land legacy for our  heirs.  We can misuse the land and diminish the usefulness of resources, or we can create a world in which physical affluence and affluence of  the spirit go hand in hand.  History tells us that earlier civilizations  have declined because they did not learn to live in harmony with the  land.”
- Stewart Lee Udall, The Quiet Crisis