Reading this sentence 90 years
later, you cannot help noticing that the word “enjoyment” is carefully framed
by the words “conserve” and “unimpaired” — a reminder that our pleasure in the
parks depends on the quality of what we find there. When the first management
policies — the day-to-day rules — were written in 1918, the director of the
park service made the point even more emphatically. The first principle, he
said, is that “the national parks must be maintained in absolutely unimpaired
form.”
Since 1916, preserving the natural
resources of the national parks has not become any easier. The American
population has nearly tripled, and the constant popularity of the parks means
that they risk being loved to death. Financing the park service is always a
battle, and the maintenance backlog continues to grow. The past few years have been
among the hardest in the history of the National Park Service, whose first
principle — preservation — has been attacked by the very people in the Interior
Department who are supposed to uphold it.
That makes it even more clear that
the authors of the Organic Act got it exactly right. Only a determined focus on
preservation can keep the parks from being eroded until there is almost nothing
left to preserve. We set aside these places because they are extraordinary,
because they enlarge our idea of nature and ourselves. Year by year our
understanding of how to protect the national parks changes because our
understanding of nature itself changes. The one thing that must not change is
our commitment to the principles signed into law 90 years ago.