Yale University historian Professor Timothy Snyder recently observed (Le Monde, 20-21 September), shortly before Donald Trump was elected, that Americans were “no wiser than the Europeans who saw democracy yield to fascism, Nazism or communism”,taking comfort in the thought that “our one advantage is that we might learn from their experience”. Is he not deluding himself? Can the human being really learn from the mistakes and errors of the past? Hungarian Prime Minister Viktor...