Neil deGrasse Tyson — "If you want to understand the universe, you have to be willing to ask the tough …"
If you want to understand the universe, you have to be willing to ask the tough questions.
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More from Neil deGrasse Tyson
"The universe is not a toy. It's a laboratory."
"If you are scientifically literate, the world looks very different to you, and that understanding empowers you."
"There's no law that says you have to like science to be a scientist. Some people just want to make money."
"I’m not trying to convince you that science is cool. Science IS cool."
"The greatest discoveries are yet to be made."