“A planet is the cradle of mind, but one cannot live in a cradle forever.”

From a letter written in 1911
Usually cited as Earth is the cradle of humanity, but one cannot live in a cradle forever. http://web.archive.org/web/20060421175318/http://www.uranos.eu.org/biogr/ciolke.html

Original

Планета есть колыбель разума, но нельзя вечно жить в колыбели.

из статьи «Исследование мировых пространств реактивными приборами», 1911—1912
Source: [Циолковский К., Исследование мировых пространств реактивными приборами, Вестник воздухоплавания, 1912, 3, 16]

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Konstantin Tsiolkovsky 10
Russian and Soviet rocket scientist and pioneer of the astr… 1857–1935

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