"In practice, the attempt to relate the evidence on the ground directly to the Noachian Flood was more or less abandon…"

"The point is simply to realize that the Earth does indeed behave in extraordinary ways—and incredulity is no defense."

"The effect of natural selection over time is to change the composition of the gene pool."

"I find that as my knowledge grows, so my appreciation deepens."

"We cannot claim to take the environment seriously until we acknowledge that a million years is a proper unit of polit…"

"Every society has cause to know that the beneficence of the Earth cannot be taken for granted."

"This intricate picture has not been easy to put together. It has required a succession of insights over three centuri…"

"The crucial notion that the world has not always been the way it is now."

"Nature is endlessly inventive, yet endlessly reinvents."

"In particular, to suggest that the creature which is measurably superior in any particular respect is ipso facto mora…"