Source: 1930s, In Praise of Idleness and Other Essays (1935), Ch. 1: In Praise of Idleness, p. 13 https://books.google.com/books?id=CnlbMP_vBmgC&pg=PA13
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History as an Art (1954), p. 9
1950s
1950s, What Desires Are Politically Important? (1950)
Bertrand Russell, attributes this phrase to 'West German friends of peace' but adopted this slogan for the Campaign for Nuclear Disarmament he helped found http://books.google.com/books?id=c4UoX6-Sv1AC&pg=PA49 William Safire, Safire's Political Dictionary, (2008) p. 49–50
Misattributed
Dialogue between Russell and his daughter Katharine, as quoted in My Father – Bertrand Russell (1975)
Attributed from posthumous publications
Source: 1910s, Our Knowledge of the External World (1914), p. 167
Letter to Lord Russell of Liverpool, February 18, 1959
1950s
Source: 1910s, Mysticism and Logic and Other Essays http://archive.org/stream/mysticism00russuoft/mysticism00russuoft_djvu.txt (1918), Ch. 4: The Study of Mathematics
An Inquiry into Meaning and Truth (1940), Introduction, p. 15
1940s
“Drunkenness is temporary suicide.”
1930s, The Conquest of Happiness (1930)
Human Knowledge: Its Scope and Limits (1948), part II, chapter 1, p. 74
1940s
Source: 1920s, Sceptical Essays (1928), Ch. 12: Free Thought and Official Propaganda
Ch VIII: The World As It Could Be Made
1910s, Proposed Roads To Freedom (1918)
“There's a Bible on that shelf there. But I keep it next to Voltaire – poison and antidote.”
In Kenneth Harris Talking To: Bertrand Russell (1971)
Attributed from posthumous publications
1920s, The Prospects of Industrial Civilization (1923)
An Outline of Philosophy Ch.15 The Nature of our Knowledge of Physics (1927)
1920s
Speech in Birmingham, England encouraging civil disobedience in support of nuclear disarmament (15 April 1961)
1960s
1950s, The Russell-Einstein Manifesto (1955)