It’s a Kirk speech? No? (Image: Star Trek, CBS)

Science fiction has a lot of great quotes that have stood the test of time. Funny, inspiring, just beautifully written sentences—there are a lot to choose from. So what’s your favorite? What’s the quotation you find yourself saying all the time?

For me, it isn’t a brilliant quote from a good piece of writing. It’s from “Spock’s Brain.” Yes, I know it’s weird that the worst episode of Star Trek is the one I can’t stop quoting. But if there is a funnier, more versatile quote than “Brain and brain, what is brain?” I have not found it.


Katharine is the former managing editor of io9.

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