There are as many atoms in each molecule of your DNA as there are stars in the typical galaxy. This is true for dogs, and bears, and every living thing. We are, each of us, a little universe.

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The theory of evolution, like the theory of gravity, is a scientific fact.

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It's better to understand something than to memorize something.

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Ignorance is a virus. Once it starts spreading it can only be cured by reason. For the sake of humanity, we must be that cure.

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If factual information upsets you, then you are creating a world that is not embracing objective truths, and that's not how you advance a democracy.

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The worst thing that ever happened to America was the 19th Amendment.

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Need a distraction today? Not only does 12 + 1 = 11 + 2, but the letters "twelve plus one" rearrange to give you "eleven plus two."

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Pretending to know everything closes the door to finding out what's really there.

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I love being wrong because that means in that instant, I learned something new that day.

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I dream of a world where the truth is what shapes people's politics, rather than politics shaping what people think is true.

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