It is characteristic of all deep human problems that they are not to be approached without some humor and some bewilderment.
From Freeman Dyson
The question that will decide our destiny is not whether we shall expand into space. It is: shall we be one species or a million? A million species will not exhaust the ecological niches that are awaiting the arrival of intelligence.
I don't think of myself predicting things. I'm expressing possibilities. Things that could happen. To a large extent it's a question of how badly people want them to.
The climate-studies people who work with models always tend to overestimate their models. They come to believe models are real and forget they are only models.
It's not going to be just humans colonizing space, it's going to be life moving out from the Earth, moving it into its kingdom. And the kingdom of life, of course, is going to be the universe.
It has become part of the accepted wisdom to say that the twentieth century was the century of physics and the twenty-first century will be the century of biology.
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