30 Quotes by Konstantin Tsiolkovsky

The world is desperately imperfect. Even if a quarter of the working people were engrossed in new thoughts and inventions and lived off the others, humanity would still gain tremendously thanks to the constant stream of inventions and intellectual work emerging from this horde of people striving upward.

My main purpose in life is to do something useful for my fellow men, not to live my life in vain, to propel mankind forward, if only by a fraction. That is why I became interested in that which gave me neither bread nor power, but I am in hopes that my work, perhaps soon, perhaps only in the distant future, will yield society heaps of grain and vast power.

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

The blue distance, the mysterious Heavens, the example of birds and insects flying everywhere —are always beckoning Humanity to rise into the air.

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

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 danger wait for him on the Earth. . . . We have said a great deal about the advantages of migration into space, but not all can be said or even imagined.

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

Mankind will not forever remain on Earth but, in the pursuit of light and space, will first timidly emerge from the bounds of the atmosphere and then advance until he has conquered the whole of circumsolar space.

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