QuotesBy.net
Home
›
Authors
›
C
›
Carl Sagan
Quote #73
All civilizations become either spacefaring or extinct.
More from Carl Sagan
Absence of evidence is not evidence of absence.
All of the books in the world contain no more information than is broadcast as video in a single large American city in a single year. Not …
A millennium before Europeans were willing to divest themselves of the Biblical idea that the world was a few thousand years old, the Mayan…
Anything else you're interested in is not going to happen if you can't breathe the air and drink the water. Don't sit this one out. Do some…
Widespread intellectual and moral docility may be convenient for leaders in the short term, but it is suicidal for nations in the long term…
Arguments from authority simply do not count; too many authorities have been mistaken too often.
A central lesson of science is that to understand complex issues (or even simple ones), we must try to free our minds of dogma and to guara…
At the heart of science is an essential tension between two seemingly contradictory attitudes - an openness to new ideas, no matter how biz…
All Carl Sagan quotes
← Carl Jung
All C authors
Carlos Castaneda →