Ian Leslie

White man speaking on a stage

Ian Leslie is the author of acclaimed books on human psychology and behaviour, translated into over a dozen languages. Malcolm Gladwell describes him as “one of my favourite writers”.

Ian has a background in business; before launching a writing career he worked as a strategist for some of the world’s biggest brands at ad agencies in London and New York. He is a contributor to the Financial Times, the Economist, and the New York Times and a keynote speaker at companies and conferences around the world, on curiosity, innovation, and productive disagreement.

In his popular Substack newsletter, The Ruffian, he writes about culture, politics, and creativity in the age of AI. Ian is a fellow of the Royal Society of Arts. He lives in London with his wife and two young children.