Neil deGrasse Tyson — "If you want to assert a truth, first make sure it's not just an opinion that you…"
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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More from Neil deGrasse Tyson
"The universe is not just a bunch of stuff. It's a story, and we're all part of it."
"I'm not a philosopher. I'm a scientist. I'm interested in what is, not what should be."
"I'm not saying I'm right. I'm just saying I have evidence."
"I think it's important to have a sense of humor about the universe. It's a pretty absurd place, after all."
"The universe is a journey, and we are all travelers."