"We make our world significant by the courage of our questions and the depth of our answers."
- Carl Sagan
"Extinction is the rule. Survival is the exception."
- Carl Sagan
"One glance at a book and you hear the voice of another person, perhaps someone dead for 1,000 years. To read is to voyage through time."
- Carl Sagan
"Science is not only compatible with spirituality; it is a profound source of spirituality."
- Carl Sagan
"For small creatures such as we the vastness is bearable only through love."
- Carl Sagan
"Somewhere, something incredible is waiting to be known."
- Carl Sagan
"Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live. In a hundred billion galaxies, you will not find another."
- Carl Sagan
"The cosmos is within us. We are made of star-stuff. We are a way for the universe to know itself."
- Carl Sagan
"The cure for a fallacious argument is a better argument, not the suppression of ideas."