Bruno Latour died today at the age of 75. The headlines of the newspapers and media sites that relay this devastating news in real time refer to him as a “sociologist” (Le Figaro), a “philosopher” (L’Obs), a “thinker of the new climactic regime” (Le Monde), and by various other titles. Most articles then proceed by qualifying the headline: “The philosopher, sociologist, and anthropologist Bruno Latour…” (France Info). Latour was all of these things — and he was all of them at the same time. From his earlier work on laboratory life to his books and theater collaborations with Frédérique Aït-Touati that, over the last decade or so, took up the notion of critical zones and the urgent question of climate change in the Anthropocene it was a methodological imperative for France’s most brilliant thinker of his generation to work across and between disciplines. As he wrote in various texts, “D’abord, décrire…” (“First of all, describe…”). And the more carefully he described, the more the rules of specific disciplines were upended. He described microbes, transport systems, religion, technology, economics, modernity, scientific practices, maps, the Earth’s crust, Paris, and much more, constantly refusing those neat separations by which most disciplines grapple with complexity. Each of Latour’s works, in their careful description of a given reality or problem, showed up the blind spots that result from modern thought’s thriving on dualities. Latour, perhaps the first and certainly the most important post-critical thinker, taught all of us how to think better about the interconnections between humans and nonhumans, nature and culture, science and politics… It is difficult to overstate the impact that Latour’s work has had — and will continue to have — on thinkers, writers, artists and indeed on humanity as it faces ecological catastrophe and possibly extinction. Latour was not only brilliant; he was also a generous thinker who liked to think with others, as his numerous collaborations confirm. When I sent him a copy of my own Exterranean, a book about extraction in early modern Europe and its ties to contemporary eco-thought, he emailed me two weeks later, clearly having read the book, to comment on “the twist in history that makes us so close to the 16th [century] while the 20th sounds extraterrestrial!”. It was a privilege and a joy to welcome Latour to New York in 2018, as part of NYU’s French Natures conference, during which Latour delivered the US première of his lecture-performance Inside (available here). The fact that Latour had been sick makes news of his death no easier. He was to return to New York in October 2022, for a reprise of Inside and the US première of its two sequels, Moving Earths and Viral, gathered together as The Terrestrial Trilogy. I already have my ticket for October 28, but clearly that is a ticket I shall not use — it now sits on my bookshelf as a small monument to one of the greatest thinkers of our times.