“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.”

“Wilderness is a resource which can shrink but not grow... creation of new wilderness in the full sense of the word is impossible.”

“The greatness of a nation and its moral progress can be judged by the way its animals are treated.”

“Let us admit, without bitterness, that the individual has his distinct interests and can, without felony, stipulate for those interests and defend them. The present has its pardonable amount of egotism; momentary life has its claims, and cannot be expected to sacrifice itself incessantly to the future. The generation which is in its turn passing over the earth is not forced to abridge its life for the sake of the generations, its equals after all, whose turn shall come later on.”

“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.”