On May 2018 the 23th, Pr Tania Li (University of Toronto) gave a conference in Montpellier, on “the Will to Improve: Governmentality, Development, and the Practice of Politics”. Organised by APAD and UMR GRED (IRD/Paul Valery University), this conference was an opportunity to come back on Tania Li’s major book, ten years after its publication.