"In the end, we will conserve only what we love; we will love only what we understand; we will understand only what we are taught."

"We do not inherit the earth from our ancestors, we borrow it from our children."

"There is nothing so American as our national parks. The fundamental idea behind the parks is that the country belongs to the people, that it is in trust for the people, and that as the people change, the parks should be preserved for their children, and their children’s children, and for all who come after."

"The national park is the best idea we ever had. Absolutely American, absolutely democratic, they reflect us at our best rather than our worst."