Next Wednesday, June 15 at 16h CET we will have the next session of the Logica Universalis Webinar. It is about the book "Logic in Question - Talks from the Annual Sorbonne Logic Workshop (2011- 2019)" published in the book series Studies in Universal Logic (SUL) https://www.springer.com/series/7391 This book is related to the Workshop "Logic in Question" organized every Spring at the Sorbonne in Paris since 2011 http://www.logic-in-question.org/ In this workshop all aspects of logic are discussed and we already had talks by a great variety of speakers from all over the world http://www.logic-in-question.org/speakers-2011-2019.html The present book collects not all the talks, but a good number of them. It is a 750-page book including 38 papers such as: - "What Is “Ancient Chinese Logic?" by Guo Zhenzhen - "Frege’s Silence About Bolzano" by Jan Sebestik - "The Relevance Logic Programme: Failed or Just Stalled?" by David Makinson - "Contributions of Logical Analysis for Mathematics Education" by Viviane Durand-Guerrier - "Back and Forth in Positive Logic", by Bruno Poizat and Aibat Yeshkeyev to quote just a few. This session of the webinar will be chaired by Razvan Diaconescu, member of the editorial board of SUL. There will be a general presentation of the workshop and the book and then a talk corresponding to one chapter of the book: - "The Place and Value of Logic in Louis Couturat’s Philosophical Thinking" by Anne-Françoise Schmid Louis Couturat was born January 17, 1868 and died August 3 1914. His world Logic Day Number is therefore B+3 "A confirmed pacifist, he was killed when his car was hit by a car carrying orders for the mobilization of the French Army, in the first stage of World War I." https://en.wikipedia.org/wiki/Louis_Couturat He proposed the word "Logistique" (Logistics) to name modern logic. He was close to Bertarnd Russell. The correspondence between Couturat and Russell, the most important scientific correspondence of Russell, dealing with all kinds of topics, was lost under the snow in La-Chaux-de-Fonds in Switzerland. Many years later It was edited and published by the author of the talk, Anne-Françoise Schmid Correspondance sur la philosophie, la logique et la politique : Bertrand Russell et Louis Couturat, 1897-1913 https://www.amazon.fr/Correspondance-sur-philosophie-logique-politique/dp/28... See here the review by Alasdair Urquhart: https://www.academia.edu/2140956/The_Couturat-Russell_Correspondence_edited_... Couturat was the creator and promoter of the universal language Ido Here is the wikipedia page about Couturat in Ido https://io.wikipedia.org/wiki/Louis_Couturat With Léopold Léau he wrote "Histoire de la Langue Universelle" https://archive.org/details/histoiredelalang00coutuoft Couturat published the work of Leibniz on logic which was almost unknown and wrote: La logique de Leibniz https://archive.org/details/lalogiquedeleib00coutgoog/page/n4/mode/2up By Anne-Françoise Schmid (together with Oliver Schlaudt) there is the book (also published by Birkhäuser): Louis Couturat: The History of Modern Symbolic Logic and Other French Manuscripts https://link.springer.com/book/10.1007/978-3-030-84828-6 Within the project A PRIZE OF LOGIC IN EVERY COUNTRY ! the logic prize for France was named "Louis Couturat Logic Prize" http://www.uni-log.org/logic-prize-world Everybody is welcome to attend the next Logica Universalis Webinar Register here: https://www.springer.com/journal/11787/updates/20065848 Jean-Yves Beziau Organizer of the Logica Universalis Webinar Series Editor Studies in Universal Logic http://www.logica-universalis.org/sul