Konstantin Tsiolkovsky
Man must at all costs overcome the Earth's gravity and have, in reserve, the space at least of the Solar System.
More quotes and aphorisms
Voting is our right, but it is also our responsibility...I can think of nothing more American...The most dangerous untruths...Human rights are not only violated by terrorism...Consciousness is a phase of mental life...A great man is one who leaves others at a loss...