Konstantin Tsiolkovsky Quotes
Man must at all costs overcome the Earth's gravity and have, in reserve, the space at least of the Solar System.
Konstantin Tsiolkovsky
The Earth is the cradle of humanity, but mankind cannot stay in the cradle forever.
Konstantin Tsiolkovsky
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Carl Sagan, Charles Darwin, George Washington Carver, Richard Dawkins, E. O. Wilson, Isaac Asimov, Margaret Mead, Galileo Galilei, W. Edwards Deming
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