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The Bureau of Communication - Fill-in-the-blank Correspondence Carl Sagan We make our world significant by the courage of our questions and by the depth of our answers. Carl Edward Sagan (9 November 1934 – 20 December 1996) was an American astronomer and popular science writer. Quotes[edit] In science it often happens that scientists say, "You know that's a really good argument; my position is mistaken," and then they would actually change their minds and you never hear that old view from them again. The truth may be puzzling. The truth may be puzzling. If you wish to make an apple pie from scratch, you must first invent the universe. That kind of skeptical, questioning, "don't accept what authority tells you" attitude of science — is also nearly identical to the attitude of mind necessary for a functioning democracy. Essay as "Mr. Essay as Mr. There is a myth about such highs: the user has an illusion of great insight, but it does not survive scrutiny in the morning.