“There is a delight in the hardy life of the open.There are no words that can tell the hidden spirit of the wilderness, that can reveal its mystery, its melancholy and its charm.The nation behaves well if it treats the natural resources as assets which it must turn over to the next generation increased; and not impaired in value.Conservation means development as much as it does protection.”

“The nation behaves well if it treats its natural resources as assets which it must turn over to the next generation increased, and not impaired, in value.”

“To waste, to destroy our natural resources, to skin and exhaust the land instead of using it so as to increase its usefulness, will result in undermining in the days of our children the very prosperity which we ought by right to hand down to them amplified and developed.”

“Here is your country. Cherish these natural wonders, cherish the natural resources, cherish the history and romance as a sacred heritage, for your children and your children's children. Do not let selfish men or greedy interests skin your country of its beauty, its riches or its romance.”

“Our duty to the whole, including the unborn generations, bids us to restrain an unprincipled present-day minority from wasting the heritage of these unborn generations. The movement for the conservation of wildlife and the larger movement for the conservation of all our natural resources are essentially democratic in spirit, purpose, and method.”

“It is a mere truism to say that every nation, whether in America or anywhere else, which desires to maintain its freedom, its independence, must ultimately realize that the right of such independence cannot be separated from the responsibility of making good use of it.”

“Of all the questions which can come before this nation, short of the actual preservation of its existence in a great war, there is none which compares in importance with the great central task of leaving this land even a better land for our descendants than it is for us.”