Quote by: Carl Sagan

At the heart of science is an essential tension between two seemingly contradictory attitueds--an openness to new ideas, no matter how bizarre or counterintuitive they may be, and the most ruthless skeptical scrutiny of all ideas, old and new.


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Author Bio


  • NameCarl Sagan
  • DescriptionAmerican astrophysicist, cosmologist, author and science educator
  • BornNovember 9, 1934
  • DiedDecember 20, 1996
  • CountryUnited States Of America
  • ProfessionCosmologist; Astrophysicist; Novelist; Planetary Scientist; Space Scientist; Popularizer Of Science; Science Fiction Writer; Science Writer
  • Awards; Pulitzer Prize For General Non-Fiction; Humanist Of The Year