Ubuntu. That was what Bill Clinton told the Labour party conference it needed to remember this week. "Society is important because of Ubuntu."
But what is it? Left-leaning sudoku? U2's latest album? Fish-friendly sushi?
No, it's a word describing an African worldview, which translates as "I am because you are," and which means that individuals need other people to be fulfilled.
The former president, husky-voiced and down-home with the delegates, gave it a folksy flavour, describing it in terms of needing to be around others to enjoy being ourselves.
"If we were the most beautiful, the most intelligent, the most wealthy, the most powerful person - and then found all of a sudden that we were alone on the planet, it wouldn't amount to a hill of beans," said Mr Clinton.
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