All our knowledge - past, present, and future - is nothing compared to what we will never know. — 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… — Konstantin Tsiolkovsky Copy Share Image
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 Many questions remain unanswered; many works are incomplete or unpublished.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
