This is the video recording of my Groningen Lecture on Modes of Reasoning – ‘Globe, Governmentality, Geometrics’. More details about the lectures and the videos of the previous lecture from Mick Dillon here. Thanks to Luis Lobo-Guerrero for the invitation and chairing the session. Sorry about the poor quality visuals. This lecture is an updated version of talks given last year at the Balsillie School and University of Zurich, and a revised version will be given again at the University of Basel in November.