“Perhaps a creature of so much ingenuity and deep memory is almost bound to grow alienated from his world, his fellows, and the objects around him. He suffers from a nostalgia for which there is no remedy upon earth except as it is to be found in the enlightenment of the spirit--some ability to have a perceptive rather than an exploitive relationship with his fellow creatures.”

“It is a commonplace of all religious thought, even the most primitive, that the man seeking visions and insight must go apart from his fellows and love for a time in the wilderness.”

“There is nothing more alone in the universe than man. He is alone because he has the intellectual capacity to know that he is separated by a vast gulf of social memory and experiment from the lives of his animal associates.”

“Already he [humanity] is physically antique in this robot world he has created. All that sustains him is that small globe of grey matter through which spin his ever-changing conceptions of the universe.”

“Man would not be man if his dreams did not exceed his grasp. ... Like John Donne, man lies in a close prison, yet it is dear to him. Like Donne's, his thoughts at times overleap the sun and pace beyond the body. If I term humanity a slime mold organism it is because our present environment suggest it. If I remember the sunflower forest it is because from its hidden reaches man arose. The green world is his sacred center. In moments of sanity he must still seek refuge there. ... If I dream by contrast of the eventual drift of the star voyagers through the dilated time of the universe, it is because I have seen thistledown off to new worlds and am at heart a voyager who, in this modern time, still yearns for the lost country of his birth.”

“Great minds have always seen it. That is why man has survived his journey this long. When we fail to wish any longer to be otherwise than what we are, we will have ceased to evolve. Evolution has to be lived forward. I say this as one who has stood above the bones of much that has vanished, and at midnight has examined his own face.”

“A world like that is not really natural, or (the thought strikes one later) perhaps it really is, only more so. Parts of it are neither land nor sea and so everything is moving from one element to another, wearing uneasily the queer transitional bodies that life adopts in such places. Fish, some of them, come out and breathe air and sit about watching you. Plants take to eating insects, mammals go back to the water and grow elongate like fish, crabs climb trees. Nothing stays put where it began because everything is constantly climbing in, or climbing out, of its unstable environment.”