Konstantin Tsiolkovsky

Man will not always stay on Earth; the pursuit of light and space will lead him to penetrate the bounds of the…

— Konstantin Tsiolkovsky

From the rocket we can see the huge sphere of the planet in one or another phase of the Moon. We can…

— Konstantin Tsiolkovsky

My entire life consisted of musings, calculations, practical works, and trials. Many questions remain unanswered; many works are incomplete or unpublished. The…

— Konstantin Tsiolkovsky

Men are weak now, and yet they transform the Earth's surface. In millions of years, their might will increase to the extent…

— Konstantin Tsiolkovsky

The Earth is the cradle of humanity, but mankind cannot stay in the cradle forever.

— Konstantin Tsiolkovsky

Man must at all costs overcome the Earth's gravity and have, in reserve, the space at least of the Solar System. All…

— Konstantin Tsiolkovsky

Earth is the cradle of humanity, but one cannot remain in the cradle forever.

— Konstantin Tsiolkovsky

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

— Konstantin Tsiolkovsky

From the moment of using rocket devices, a great new era will begin in astronomy: the epoch of the more intensive study…

— Konstantin Tsiolkovsky

I do not remember how it got into my head to make the first calculations related to rocket. It seems to me…

— Konstantin Tsiolkovsky

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…

— Konstantin Tsiolkovsky

All the universe is full of the lives of perfect creatures.

— Konstantin Tsiolkovsky

Man must at all costs overcome the Earth's gravity and have, in reserve, the space at least of the Solar System.

— Konstantin Tsiolkovsky

Mankind will not forever remain on Earth but, in the pursuit of light and space, will first timidly emerge from the bounds…

— Konstantin Tsiolkovsky

The Earth is the cradle of Humanity. But one doesn't always live in the cradle.

— Konstantin Tsiolkovsky

Consider a cask filled with a highly compressed gas. If we open one of its taps the gas will escape through it…

— Konstantin Tsiolkovsky

All our knowledge - past, present, and future - is nothing compared to what we will never know.

— Konstantin Tsiolkovsky

First, inevitably, the idea, the fantasy, the fairy tale. Then, scientific calculation. Ultimately, fulfillment crowns the dream.

— Konstantin Tsiolkovsky

Men are weak now, and yet they transform the Earth's surface. In millions of years their might will increase to the extent…

— Konstantin Tsiolkovsky

To set foot on the soil of the asteroids, to lift by hand a rock from the Moon, to observe Mars from…

— Konstantin Tsiolkovsky