There is life in a stone. Any stone that sits in a field or lies on a beach takes on the memory of that place. You can feel that stones have witnessed so many things.

My study of the wild gorilla is not yet finished, and even when it is complete, it will contribute only a small part toward man's understanding of his closest animal relatives, the great apes. But one conclusion is already clear: The gorilla is one of the most maligned animals in the world.

Prize the natural spaces and shorelines most of all, because once they're gone, with rare exceptions they're gone forever. In our bones we need the natural curves of hills, the scent of chapparal, the whisper of pines, the possibility of wildness. We require these patches of nature for our mental health and our spiritual resilience.

I'd like to see animals removed from the entertainment business. Chimpanzees and apes won't perform unless you beat them. Circuses keep elephants in chains 90 percent of the time. Elephants need freedom of movement. In circuses, they live in cramped quarters, which is not the life intended for them by nature. Some are beaten daily, forced to do ridiculous tricks and robbed of every shred of dignity.

A pilot's business is with the wind, and with the stars, with night, with sand, with the sea. He strives to outwit the forces of nature. He stares with expectancy for the coming of the dawn the way a gardener awaits the coming of spring. He looks forward to port as a promised land, and truth for him is what lives in the stars.

A land ethic...reflects the existence of an ecological conscience, and this in _x000D_ turn reflects a conviction of individual responsibility for the health of the land. _x000D_ Health is the capacity of the land for self-renewal. Conservation is our effort _x000D_ to understand and preserve this capacity.