Quotes by : Carl Sagan

But if they called everything divine which they do not understand, why, there would be no end of divine....

Every aspect of Nature reveals a deep mystery and touches our sense of wonder and awe. Those afraid of....

There is some evidence that dreaming is necessary. When people or other mammals are deprived of REM sleep....

The laws of nature cannot be randomly reshuffled at the cusps [of an oscillating universe]. If the universe....

All the explanations proposed seem to beonly partly satisfactory. They range from massive climatic change....

Liberation from superstition is a necessary but not a sufficient condition for science.

The time scale for evolutionary or genetic change is very long. A characteristic period for the emergence....

At the very moment that humans discovered the scale of the universe and found that their most unconstrained....

deluded or not, supporters of superstition and pseudoscience are human beings with real feelings, who,....

Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live.....