"Books are the carriers of civilization. Without books, history is silent, literature dumb, science crippled, thought and speculation at a standstill."

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Several days in a row we sighted groups of metallic, saucer-shaped vehicles at great altitudes over the base Germany, 1951 and we tried to get close to them, but they were able to change direction faster than our fighters. I do believe UFOs exist and that the truly unexplained ones are from some other technically advanced civilization.

— Gordon Cooper