“All the resources we need are in the mind. ”

“The conservation of natural resources is the fundamental problem. Unless we solve that problem it will avail us little to solve all others”

“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.”

“In foreign affairs we must make up our minds that, whether we wish it or not, we are a great people and must play a great part in the world. It is not open to us to choose whether we will play that great part or not. We have to play it. All we can decide is whether we shall play it well or ill.”

“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.”

“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.”

“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.”