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present
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If you are using this quote in any webpage , printmedia or any other places please use the following methods to cite this quotation.
MLA Style Citation
"A quote by Carl Sagan" theysaidso.com, 2024. May 05, 2024. https://theysaidso.com/quote/carl-sagan-you-have-to-know-the-past-to-understand-the-present
APA Style Citation
"A quote by Carl Sagan" (n.d.). theysaidso.com. Retrieved May 05, 2024, from theysaidso.com web site : https://theysaidso.com/quote/carl-sagan-you-have-to-know-the-past-to-understand-the-present
Chicago Style Citation
"A quote by Carl Sagan". theysaidso.com, 2024. https://theysaidso.com/quote/carl-sagan-you-have-to-know-the-past-to-understand-the-present , accessed May 05, 2024.