400
This historian stated: "Ranke is the representative of the age that instituted the modern study of history. He taught it to be critical, to be colourless, and to be new. We meet him at every step, and he has done more for us than any other man."
Who is Lord Acton? BONUS POINTS if you can tell me where this quote comes from OR if you can evaluate what Lord Acton's meaning may have been.