The Earth is the only world known so far to harbor life.
CARL SAGANThe Earth is the only world known so far to harbor life.
CARL SAGANThe universe is not required to be in perfect harmony with human ambition.
CARL SAGANScience is an attempt, largely successful, to understand the world, to get a grip on things, to get hold of ourselves, to steer a safe course.
CARL SAGANBooks break the shackles of time, proof that humans can work magic.
CARL SAGANI don’t want to believe. I want to know.
CARL SAGANThere are no forbidden questions in science, no matters too sensitive or delicate to be probed, no sacred truths.
CARL SAGANNot explaining science seems to me perverse. When you’re in love, you want to tell the world.
CARL SAGANBetter the hard truth, I say, than the comforting fantasy.
CARL SAGANWe can judge our progress by the courage of our questions and the depth of our answers, our willingness to embrace what is true rather than what feels good.
CARL SAGANOur species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works.
CARL SAGANWe all have a thirst for wonder. It’s a deeply human quality. Science and religion are both bound up with it.
CARL SAGANThe price we pay for anticipation of the future is anxiety about it.
CARL SAGANA galaxy is composed of gas and dust and stars – billions upon billions of stars. Every star may be a sun to someone.
CARL SAGANAn atheist is someone who is certain that God does not exist, someone who has compelling evidence against the existence of God.
CARL SAGANExtraordinary claims require extraordinary evidence.
CARL SAGANWe can’t help it. Life looks for life.
CARL SAGAN