Big History studies the history of everything, offering a way of making sense of our world and our role within it.

I think what I was after was a unifying story that could bring everything together, that could give me a sense of the whole of history.

What we normally define as history doesn't interest me. It's a constraint.

I had this feeling that, somehow, we ought to be teaching not just the history of particular nations or particular regions, but the history of humanity.