Absolute certainty will always elude us. We will always be mired in error. The most each generation can hope for is to reduce the error. . . .
Carl SaganI find science so much more fascinating than science fiction. It also has the advantage of being true.
Carl SaganExcept for fools and madmen, everyone knows that nuclear war would he an unprecedented human catastrophe.
Carl SaganIf the greenhouse effect is a blanket in which we wrap ourselves to keep warm, nuclear winter kicks the blanket off.
Carl Sagan