What Makes Us All the Same? The Fact That We're All Different

Hannah Arendt, on what makes political life possible: "Plurality is the condition of human action because we are all the same, that is, human, in such a way that nobody is ever the same as anyone else who ever lived, lives, or will live."

Curious claim. What is it that makes us all the same? The fact that we are all different. I'm sure that claim will strike you differently than it did me.