“The oceans are the planet's last great living wilderness, man's only remaining frontier on Earth, and perhaps his last chance to prove himself a rational species.”

“Only when there is a wilderness can man harmonize his inner being with the wavelengths of the earth. When the earth, its products, its creatures, become his concern, man is caught up in a cause greater than his own life and more meaningful. Only when man loses himself in an endeavor of that magnitude does he walk and live with humanity and reverence.”

“Whether he knew of this deficiency himself I can't say. I think the knowledge came to him at last--only at the very last. But the wilderness found him out early, and had taken vengeance for the fantastic invasion. I think it had whispered to him things about himself which he did not know, things of which he had no conception till he took counsel with this great solitude--and the whisper had proved irresistibly fascinating. It echoed loudly within him because he was hollow at the core”

“Without a firm idea of himself and the purpose of his life, man cannot live, and would sooner destroy himself than remain on earth, even if he was surrounded by bread.”

“Unlike the puerile loyalty to a conviction, loyalty to a friend is a virtue - perhaps the only virtue, the last remaining one.”

“A new consciousness is developing which sees the earth as a single organism and recognizes that an organism at war with itself is doomed. We are one planet. One of the great revelations of the age of space exploration is the image of the earth finite and lonely, somehow vulnerable, bearing the entire human species through the oceans of space and time.”