The Earth is the cradle of humanity, but mankind cannot stay in the cradle forever. — Konstantin Tsiolkovsky Copy Share Image
Earth is the cradle of humanity, but one cannot remain in the cradle forever. — Konstantin Tsiolkovsky Copy Share Image
Mankind will not forever remain on Earth but, in the pursuit of light and space, will first timidly emerge from the bounds… — Konstantin Tsiolkovsky Copy Share Image
Man will not always stay on Earth; the pursuit of light and space will lead him to penetrate the bounds of the atmosphere, timidly… — Konstantin Tsiolkovsky Copy Share Image
From the rocket we can see the huge sphere of the planet in one or another phase of the Moon. We can see how the sphere rotates, and how within a few hours it shows all its sides successively ... and we shall observe various points on the surface of the Earth for several minutes and from different sides very… — Konstantin Tsiolkovsky Copy Share
My entire life consisted of musings, calculations, practical works, and trials. Many questions remain unanswered; many works are incomplete or unpublished. The most important… — Konstantin Tsiolkovsky Copy Share Image
Men are weak now, and yet they transform the Earth's surface. In millions of years, their might will increase to the extent that they… — Konstantin Tsiolkovsky Copy Share Image
The Earth is the cradle of humanity, but mankind cannot stay in the cradle forever. — Konstantin Tsiolkovsky Copy Share Image
Man must at all costs overcome the Earth's gravity and have, in reserve, the space at least of the Solar System. All kinds of… — Konstantin Tsiolkovsky Copy Share Image
Earth is the cradle of humanity, but one cannot remain in the cradle forever. — Konstantin Tsiolkovsky Copy Share Image
A planet is the cradle of mind, but one cannot live in a cradle forever. — Konstantin Tsiolkovsky Copy Share Image
From the moment of using rocket devices, a great new era will begin in astronomy: the epoch of the more intensive study of the… — Konstantin Tsiolkovsky Copy Share Image
I do not remember how it got into my head to make the first calculations related to rocket. It seems to me the first… — Konstantin Tsiolkovsky Copy Share Image
For me, a rocket is only a means--only a method of reaching the depths of space--and not an end in itself... There's no doubt… — Konstantin Tsiolkovsky Copy Share Image
All the universe is full of the lives of perfect creatures. — Konstantin Tsiolkovsky Copy Share Image
