This volume of Bertrand Russell's Collected Papers finds Russell focused on writing Principia Mathematica during 1905–08. Eight previously unpublished papers shed light on his different versions of a substitutional theory of logic, with its elimination of classes and relations, during 1905-06. A recurring issue for him was whether a type hierarchy had to be part of a substitutional theory. In mid-1907 he began writing up the final version of Principia, now using a ramified theory of types, and eleven unpublished drafts from 1907-08 deal with this. Numerous letters show his thoughts on the process. The volume's 80-page introduction covers the evolution of his logic from 1896 until 1909, when volume I of Principia went to the printer.

This volume of Bertrand Russell's Collected Papers finds Russell focused on writing Principia Mathematica during 1905–08. Eight previously unpublished papers shed light on his different versions of a substitutional theory of logic, with its elimination of classes and relations, during 1905-06. A recurring issue for him was whether a type hierarchy had to be part of a substitutional theory. In mid-1907 he began writing up the final version of Principia, now using a ramified theory of types, and eleven unpublished drafts from 1907-08 deal with this. Numerous letters show his thoughts on the process. The volume's 80-page introduction covers the evolution of his logic from 1896 until 1909, when volume I of Principia went to the printer.

First published in 1988. Routledge is an imprint of Taylor & Francis, an informa company.

The Collected Papers of Bertrand Russell, Volume 26 covers a period of transition in Russell's political life between his orthodox and sometimes pugnacious defence of the West in the early post-war, and the dissenting advocacy of nuclear disarmament and détente that started in earnest in the mid-1950s. While some of the assembled writings echo harsh prior criticism of Soviet expansionism and dictatorship, others register growing qualms about the recklessness of American foreign policy and the baneful effects on civil liberties of anti-communist hysteria inside the United States. Whether continuing to push for western rearmament, or highlighting in a more placatory vein the folly of the Cold War's divisions and rival fanaticisms, Russell's paramount objective was avoiding a war that threatened global catastrophe. Suspended between fear and hope, he expounded his evolving political concerns–and much else besides, including autobiographical reflections and typically common-sense guidance for living well–in a constant flow of newspaper and magazine articles, letters to editors, radio broadcasts and discussions and, of special note, a Nobel Prize acceptance speech. Russell also completed two lecture tours of the United States (the last of many), as well as a landmark such visit to Australia. All three of these journeys, and the textual record they left, are examined in depth using manuscript material and unpublished correspondence from the Bertrand Russell Archives at McMaster University, which is mined extensively throughout the volume.

This volume collects together Russell's philosophical writings during the period from 1947-68. For about half of this period Russell worked steadily at philosophy but after the publication of My Philosophical Development in 1959 he retired from academic philosophy for the second time. After that date, only the occasional philosophical piece appeared, as he was preoccupied with political writings. In this volume there are a handful of papers dated later than 1959, and all of these were certainly written by Russell himself.This volume contains Russell's writings on diverse philosophical interests, including autobiographical and self-critical papers, critiques of other philosophers and his controversial opinions on Christianity.