“Because mankind can circumvent evolutionary law, it is incumbent upon him, say evolutionary biologists to develop another law to abide by if he wishes to survive, to not outstrip his food base. He must learn restraint. He must derive some other, wiser way of behaving toward the land. He must be more attentive to the biological imperatives of the system of sun-driven protoplasm upon which he, too, is still dependent. Not because he must, because he lacks inventiveness, but because herein is the accomplishment of the wisdom that for centuries he has aspired to. Having taken on his own destiny, he must now think with critical intelligence about where to defer.”

“Would the last animal, eating garbage and living on the last scrap of land, his mate dead, would he still forgive you?”

“A man may go through life and remain ignorant of himself he may think himself as other than he truly is and he may die with this illusion still intact because no circumstance of his life has obliged him to revise it.”

“In Galapagos, as elsewhere, things of the mind, including intellectual ramifications from evolutionary theory, and things of the spirit, like the feeling one gets from a Queen Anne’s lace of stars in the moonless Galapagean sky, struggle toward accommodation with an elementary desire for material comfort…because so many regard this archipelago as preeminently a terrain of the mind and spirit, a locus of biological thought and psychological rejuvenation. The sheer strength of Darwin’s insight into the development of biological life gently urges a visitor to be more than usually observant here- to notice, say, that while the thirteen Galapagean finches are all roughly the same hue, it is possible to separate them according to marked differences in the shapes of their bills and feeding habits.”

“Man's mind is his basic tool of survival. Life is given to him, survival is not. His body is given to him, its sustenance is not. His mind is given to him, its content is not. To remain alive, he must act, and before he can act he must know the nature and purpose of his action. He cannot obtain his food without a knowledge of food and of the way to obtain it. He cannot dig a ditch-or build a cyclotron-without a knowledge of his aim and of the means to achieve it. To remain alive, he must think”

“Mankind is focused on earth; he is mostly interested in stupid things like wars or ideological absurdities. What he has to do is to concentrate on the universe, because the universe is a cosmic novel that he must read fully, that he must understand fully and that in the end he must rewrite it!”

“How is one to live a moral and compassionate existence when one is fully aware of the blood, the horror inherent in life, when one finds darkness not only in one’s culture but within oneself? If there is a stage at which an individual life becomes truly adult, it must be when one grasps the irony in its unfolding and accepts responsibility for a life lived in the midst of such paradox. One must live in the middle of contradiction, because if all contradiction were eliminated at once life would collapse. There are simply no answers to some of the great pressing questions. You continue to live them out, making your life a worthy expression of leaning into the light.”