“Human beings have always been an unfinished species, a story in the middle, a succession of families, tribes, and societies in transition to new awarenesses. Although we have always prided ourselves on our willingness to adapt to all habitats, and on our skill at prospering and making ourselves comfortable wherever we are -- in a meadow, in a desert, on the tundra, or out on the ocean -- we don't just adapt to places, or modify them in order to ease our burdens. We're the only species that over and over again has deliberately transformed our surroundings in order to stretch our capacity for understanding and provoke new accomplishments. And our growing and enhanced understanding is our most valuable, and our most vulnerable, inheritance.”

“For our own species, evolution occurs mostly through our behavior. We innovate new behavior to adapt.”

“Perceptions trained in another climate and another landscape have had to be modified. That means we have had to learn to quit depending on perceptual habit. Our first and hardest adaptation was to learn all over again how to see. Our second was to learn to like the new forms and colors and light and scale when we had learned to see them. Our third was to develop new techniques, a new palette, to communicate them. And our fourth, unfortunately out of of our control, was to train an audience that would respond to what we wrote or painted.”

“Humanity is a biological species, living in a biological environment, because like all species, we are exquisitely adapted in everything: from our behavior, to our genetics, to our physiology, to that particular environment in which we live. The earth is our home. Unless we preserve the rest of life, as a sacred duty, we will be endangering ourselves by destroying the home in which we evolved, and on which we completely depend.”

“The systems of stereotypes may be the core of our personal tradition, the defenses of our position in society. They are an ordered more or less consistent picture of the world, to which our habits, our tastes, our capacities, our comforts and our hopes have adjusted themselves. They may not be a complete picture of the world, but they are a picture of a possible world to which we are adapted. In that world, people and things have their well-known places, and do certain expected things. We feel at home there. We fit in. We are members.[...]It is not merely a short cut. It is all these things and something more. It is the guarantee of our self-respect; it is the projection upon the world of our own sense or our own value, our own position, and our own rights. [...] They are the fortress of our traditions, and behind its defenses we can continue to feel ourselves safe in the position we occupy.”

“We wrap up our violent and mysterious world in a pretence of understanding. We paper over the voids in our comprehension with science or religion, and make believe that order has been imposed.”