In the highly polarised world of today, the idea of centralism is appealing. Dunt and Lynskey try to explain what centralism is, how it grew from even before the French Revolution to what it is today. That’s the problem: what is it today? Centre-left, centre-right, or something outside the left-right dimension? Many attempts at centrism, from JS Mill, Keynes, Roy Jenkins, Bill Clinton, Tony Blair, even Bob Hawke gets a mention, to Emmanual Macron, all of which have different takes on the notion. Centrism as a concept is slippery, not just a bit of right and a bit left thinking, but a new way of thinking that doesn’t quite seem to gel. What does come out clearly is that all too often means governing by poll, which assumes that majority public opinion is usually centrist, which in times of crisis it is not. The book is not very long, unlike Dunt’s How to be a Liberal, which discusses some of these issues more clearly and deeply. This book rather convinced me that extreme left and extreme right are to be avoided – not so extreme as fascism and communism which Dunt sees as very similar indeed by virtue of the sort of society that strong extremism, aka authoritarianism, produces. Dunt and Lynskey concentrate on British and French politics, with some American, and I found it difficult to extrapolate to the Australian scene. Is that because we have tended to avoid extremism? Perhaps we did, until John Howard took us to the right, with Peter Dutton currently in the wings to take us to the extreme right. Albanese tries to be a centrist and the result is simply weak. So, Australians, watch out and hope we can get a competent centrist in the form of a Macron – and that was a surprise, for Dunt sees Macron as a highly effective centrist, but then a Le Pen is creeping up behind him. Centrism, as moderation and toleration, seems like a very good idea but it seems to be more of an attitude than the basis for a coherent policy.