I was sad to hear that Allan Meltzer passed away today, at the age of 89. I always thought of him as one of the leaders of monetarism, along with Milton Friedman, Anna Schwartz and Karl Brunner (with whom he frequently collaborated on research.) Unfortunately I didn’t meet Allan until he was in his 80s, but he was still quite energetic and passionate about both monetary economics and classical liberalism more broadly. As recently as last year he participated in the Mercatus colloquium on the effect of low interest rates, and also spoke at one of our events.