"If I have a script, I tend to stick to it even if God may be leading me elsewhere in the moment."

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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 that it's very important to have rocket ships since they will help mankind to settle elsewhere in the universe. But what I'm working for is this resettling... The whole idea is to move away from the Earth to settlements in space.

— Konstantin Tsiolkovsky