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Carl Sagan Quotes

Keeping An Open Mind Is A Virtue - But, As The Space Engineer James Oberg Once Said, Not So Open That Your Brains Fall Out.

Carl Sagan Quotes: Keeping An Open Mind Is A Virtue - But, As The Space Engineer James Oberg Once Said, Not So Open

Carl Sagan Quotes: Keeping An Open Mind Is A Virtue - But, As The Space Engineer James Oberg Once Said, Not So Open

Carl Sagan Quotes: Keeping An Open Mind Is A Virtue - But, As The Space Engineer James Oberg Once Said, Not So Open

Carl Sagan Quotes: Keeping An Open Mind Is A Virtue - But, As The Space Engineer James Oberg Once Said, Not So Open

Carl Sagan Quotes: Keeping An Open Mind Is A Virtue - But, As The Space Engineer James Oberg Once Said, Not So Open

Carl Sagan Quotes: Keeping An Open Mind Is A Virtue - But, As The Space Engineer James Oberg Once Said, Not So Open

Carl Sagan Quotes: Keeping An Open Mind Is A Virtue - But, As The Space Engineer James Oberg Once Said, Not So Open

Carl Sagan Quotes: Keeping An Open Mind Is A Virtue - But, As The Space Engineer James Oberg Once Said, Not So Open

Carl Sagan Quotes: Keeping An Open Mind Is A Virtue - But, As The Space Engineer James Oberg Once Said, Not So Open

Carl Sagan Quotes: Keeping An Open Mind Is A Virtue - But, As The Space Engineer James Oberg Once Said, Not So Open

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