If we're going to have any chance of sending stuff to other star systems, we need to be laser-focused on becoming a multi-planet civilisation.
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If you look at our current technology level, something strange has to happen to civilisations, and I mean strange in a bad way. And it could be that there are a whole lot of dead, one-planet civilisations.
In order for us to have a future that's exciting and inspiring, it has to be one where we're a space-bearing civilization.
Your probability of dying on Mars is much higher than earth. Really, the ad for going to Mars would be like Shackleton's ad for going to the Antarctic: "It's gonna be hard. There's a good chance of death, going in a little can through deep space. You might land successfully. Once you land successfully, you'll be working nonstop to build the base."
Like other systems in decay, the Roman Empire continued to function for several generations after its vitality was sapped. For nearly a hundred years our Island was one of the scenes of conflict between a dying civilisation and lusty, famishing barbarism.
Civilisation had been restored to the Island. But now the political fabric which nurtured it was about to be overthrown. Hitherto strong men armed had kept the house. Now a child, a weakling, a vacillator, a faithless, feckless creature, succeeded to the warrior throne.
Civilisation will not last, freedom will not survive, peace will not be kept, unless a very large majority of mankind unite together to defend them and show themselves possessed of a constabulary power before which barbaric and atavistic forces will stand in awe.
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