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. T… - Konstantin Tsiolkovsky

Человечество не останется вечно на земле, но в погоне за светом и пространством сначала робко проникнет за пределы атмосферы, а затем завоюет себе все околосолнечное пространство

The Earth is the cradle of the mind, but one cannot eternally live in a cradle.

In terms of mathematics, the entire universe is alive, but the power of its sensitivity is manifested in all its brilliance only among the higher animals. All atoms of matter feel in keeping with the environment. Finding itself in highly organized beings, atoms life their life and feel their pleasure and pain. If they find themselves in the inorganic world, they sleep, as it were, immersed in a deep state of unconsciousness, in nothingness.
Even in a single animal, as they wander around its body, the atoms live the life now of the brain, now of the bones, hair, nails, epithelium, and so on. Meaning that atoms now think, now live like atoms imprisoned in stone, water, or air. Now they sleep, with no awareness of time; now they live for the moment, like the lower beings; now they are aware of the past and paint a picture of the future. The more organized the being, the farther this notion of future and past extends.