Carl Sagan
Ask courageous questions. Do not be satisfied with superficial answers.
Carl Sagan
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Ask courageous questions. Do not be satisfied with superficial answers. - Carl Sagan quote

Ask courageous questions. Do not be satisfied with superficial answers.

Carl Sagan

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2017 November 13
Link:
https://books.google.com/books?id=BVQw4fSjoM0C&pg=PA1&dq=Ask+courageous+questions.+Do+not+be+satisfied+with+superficial+answers.+Carl+Sagan&hl=en&sa=X&ved=0ahUKEwi_j4KrsvnWAhUhxFQKHdx6Cp0Q6AEIKDAA#v=onepage&q=%22Ask%20courageous%20questions.%20Do%20not%20be%20satisfied%20with%20superficial%20answers%22%20Carl%20Sagan&f=false

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Carl Sagan

Carl Sagan

American astrophysicist, cosmologist, author and science educator

November 9th, 1934 - December 20th, 1996