The earth has music for those who listen.
The human spirit needs places where nature has not been rearranged by the hand of man.
Wilderness is not a luxury but a necessity of the human spirit.
The wildlife of today is not ours to do with as we please. We have it in trust. We must account for it to those who come after.
The earth does not belong to us. We belong to the earth.
In the end, we will conserve only what we love; we will love only what we understand, and we will understand only what we are taught.
Nature never did betray the heart that loved her.
In the end we will conserve only what we love; we will love only what we understand; and we will understand only what we are taught.
We won't have a society if we destroy the environment.
In nature, nothing exists alone.
Until we extend our circle of compassion to all living things, humanity will not find peace.
Until we stop harming all other living beings, we are still savages.
The more clearly we can focus our attention on the wonders and realities of the universe about us, the less taste we shall have for destruction.
The greatness of a nation and its moral progress can be judged by the way its animals are treated.
The wildlife and its habitat cannot speak, so we must and we will.
For every animal that goes extinct, humanity loses a part of itself.