“A change of world view not only brings about profound cultural changes, but also is responsible for what historians call a "change of age." An age is a period of time in which the prevailing world view has remained relatively unchanged.”

“The elements, though they can be changed, cannot be destroyed. Again, everything destructible is changed by time and grows old. But the world through all these years has remained utterly unchanged.”

“When we come to inanimate elements, the prevailing view has been that time and sequential change are entirely foreign to their nature. According to this view they do not have careers; they simply change their relations is space. We have only to think of the classic conception of atoms. The Newtonian atom, for example, moved and was moved, thus changing its position in space, but it was unchangeable in its own being. …In itself it was like a God, the same yesterday, today, and forever.”

“As people age, they confuse changes in themselves with changes in the world, and changes in the world with moral decline—the illusion of the good old days.”

“Life is neither static nor unchanging. With no individuality, there can be no change, no adaptation and, in an inherently changing world, any species unable to adapt is also doomed.”

“No doubt there is much immature talking and hasty writing and will always be where liberty of speech and press prevails. The political, religious, and social views of any age and even of the most radical members of society, were born, long before their time. Those who invented the alphabet and the printing press are indirectly responsible for much of the violence of a changing social state; but in the same way, they are responsible for the progress of the world, for the enlightenment, for the civilization, and for all that makes the present better than the past.”

“Law grows, and though the principles of law remain unchanged, yet (and it is one of the advantages of the common law) their application is to be changed with the changing circumstances of the times. Some persons may call this retrogression, I call it progression of human opinion.”

“Time changes, and our desires change. What we
believe—even what we are—is ever-
changing. The world is change, which forever
takes on new qualities.”

“Time travel may be achieved one day, or it may not. But if it is, it should not require any fundamental change in world-view, at least for those who broadly share the world view I am presenting in this book.”

“The circumstances of the world are continually changing, and the opinions of man change also; and as government is for the living, and not for the dead, it is the living only that has any right in it.”