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Half of my library are old books because I like seeing how people thought about their world at their time. So that I don't get bigheaded about something we just discovered and I can be humble about where we might go next. Because you can see who got stuff right and most of the people who got stuff wrong.
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Humans aren't as good as we should be in our capacity to empathize with feelings and thoughts of others, be they humans or other animals on Earth. So maybe part of our formal education should be training in empathy. Imagine how different the world would be if, in fact, that were 'reading, writing, arithmetic, empathy.'
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If you're going to lead a space frontier, it has to be government; it'll never be private enterprise. Because the space frontier is dangerous, and it's expensive, and it has unquantified risks. And under those conditions, you cannot establish a capital-market evaluation of that enterprise. You can't get investors.
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We define ourselves as intelligent. That's odd, because we're doing the definition - We're creating our own definition and saying, 'We are intelligent!'
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As an American, I grew up in an era where we led the world in everything. Everything!
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I see all this talk about jobs going overseas as a symptom of the absence of innovation. And the absence of innovation is a symptom of there being no major national priority to advance a frontier.
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You can't have people making decisions about the future of the world who are scientifically illiterate. That's a recipe for disaster. And I don't mean just whether a politician is scientifically literate, but people who vote politicians into office.
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When an industry matures, it means it's not advancing, and of course the jobs go overseas. That's the obligation of the multi-national corporation: to put the factory where it can make the widget as cheap as possible. Don't get angry when a corporation does that; we've all bought into this concept. We live in a capitalistic society.
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If you want to assert a truth, first make sure it's not just an opinion that you desperately want to be true.
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Let me tell you something about full moons: kids don't care about full moons. They'll play in a full moon, no worries at all. They only get scared of magic or werewolves from stupid adults and their stupid adult stories.
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Humans aren't as good as we should be in our capacity to empathize with feelings and thoughts of others, be they humans or other animals on Earth.
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Some of the most productive times in the histories of nations have been when they were badly stressed - economically, politically, culturally or socially. It's possible to be stressed to a point that more creativity is stimulated than would otherwise be the case. I think it is true that necessity is the mother of invention.
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Every account of a higher power that I've seen described, of all religions that I've seen, include many statements with regard to the benevolence of that power. When I look at the universe and all the ways the universe wants to kill us, I find it hard to reconcile that with statements of beneficence.
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In any city with lots of skyscrapers, lots of skyline, the moon seems bigger than it is. It's called the moon illusion.
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With regard to robots, in the early days of robots people said, 'Oh, let's build a robot' and what's the first thought? You make a robot look like a human and do human things. That's so 1950s. We are so past that.
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I don't want people to say, 'Something is true because Tyson says it is true.' That's not critical thinking.
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The idea that science is just some luxury that you'll get around to if you can afford it is regressive to any future a country might dream for itself.
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Passion is what gets you through the hardest times that might otherwise make strong men weak, or make you give up.
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Pluto's orbit is so elongated that it crosses the orbit of another planet. Now that's... you've got no business doing that if you want to call yourself a planet. Come on, now! There's something especially transgressive about that.
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There's something about witnessing something in the sky that makes people think they're seeing something unique or special. I don't really understand the psychology of it, to be honest.
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Any astrophysicist does not feel small looking up at the universe; we feel large.
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As a citizen, as a public scientist, I can tell you that Einstein essentially overturned a so strongly established paradigm of science, whereas Darwin didn't really overturn a science paradigm.
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If you think of feelings you have when you are awed by something - for example, knowing that elements in your body trace to exploded stars - I call that a spiritual reaction, speaking of awe and majesty, where words fail you.
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One of my great laments is that education today seems to have... be less about passion and more about process, more about tactic or technique.