Review for Inference. International Review of Science Peter Sloterdijk, Foams. Spheres III, South Pasadena California, Semiotext(e), 2016 Pieter Lemmens, Radboud University With the appearence of this third and final volume, entitled Foams (originally published in German in 2004) the English translation of Peter Sloterdijk’s Spheres trilogy has now been finally completed. The first and second volumes, Bubbles and Globes, appeared respectively in 2011 (originally 1998) and 2014 (originally 1999). Spheres is a truly monumental work of rare ambition and extraordinary magnitude, providing a thoroughly original ‘massive redescription’ (Richard Rorty) of the history of humanity and spanning no less than 2573 pages in the original German edition (although it must be said that these pages feature an abundance of illustrations as well, a trademark of Sloterdijk’s unique style, to which I will return below). It is the author’s grand magnum opus and contains the full and definitive articulation of what he terms his sphero-immunological thought project, which is both a philosophical anthropology and a ‘Big Picture’ philosophy of history and culture aiming at a new understanding of the human condition from a decisively topological perspective, as a ‘spatial history’ 1 of ‘modes of being-in- the-world’ 2 , and offering a new general explanation for the historical unfolding of human cultures and societies and the concomitant evolution of religious,