It takes less than a decade for today's luxury to become a universal necessity.

Global warming, like Marxism, is a political theory of actions, demanding compliance with its rules.

If anti-Semitism is a variety of racism, it is a most peculiar variety, with many unique characteristics. In my view as a historian, it is so peculiar that it deserves to be placed in a quite different category. I would call it an intellectual disease, a disease of the mind, extremely infectious and massively destructive.

The word 'meaningful' when used today is nearly always meaningless.

For me this is the vital litmus test: no intellectual society can flourish where a Jew feels even slightly uneasy.

A Stalin functionary admitted, Innocent people were arrested: naturally - otherwise no one would be frightened. If people were arrested only for specific misdemeanours, all the others would feel safe and so become ripe for treason.

The study of history is a powerful antidote to contemporary arrogance. It is humbling to discover how many of our glib assumptions, which seem to us novel and plausible, have been tested before, not once but many times and in innumerable guises; and discovered to be, at great human cost, wholly false.