Mark Blaug died on 18 November, 2011, at home in Tavistock (UK). This sad news came to us by a sober message on the SHOE (Societies for the History of Economics) list, written by Roger Backhouse, a few days later. An intellectual ‘giant’ had died. From his first publications in 1956 onwards, he had written important, often pioneering contributions to economic history, economic methodology, economics of education and development economics, economics of the arts, economic theory, and history of economic thought. Mark was indeed ‘not only an economist’ (Blaug 1994b). To commemorate his ideas and the influence they had on many of us a Memorial Conference was held on 28 March, 2012 at the Erasmus Institute for Philosophy and Economics (EIPE), Rotterdam (NL). In parallel, on 26 March in the same week, the Scottish Centre for Economic Methodology (SCEME) hosted a seminar at the University of Glasgow in tribute to his work. It was fitting in many ways that these two events should commemorate Mark’s legacy in the Netherlands and the UK as the two countries Mark regarded as his home, sharing his time between them during the past two decades. Equally, it was fitting that EIPE and SCEME should honour him in his way given his longstanding and crucial involvement in both institutions. For both conferences we invited old and new friends and colleagues to talk, discuss, and argue his ideas and their legacy in a way that we were sure Mark would have loved to counter.