The Isaiah Berlin Catalogue
Herman, David, ‘Isaiah Berlin and the Holocaust: What Did Berlin Know? And When Did He Know it?’, Jewish Quarterly, Summer 18, 62–8

Moran, Michael, ‘Isaiah Berlin and the “History of Ideas”: Some Personal Impressions’, chapter 18 in id., Metaphysical Imagination and Other Essays on Philosophy and Modern European Mind (Peterborough, 2018: FastPrint)
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(in Arabic) Niroomand, Mahin, and Hassan Abniki, ‘The Ratio of Political Goodness and Negative Freedom in Berlin’s Political Thought (With Emphasis on Russian Communism)’, International Journal of Political Science, 8 no. 2 (Summer 2018), 49–65

Ricciardi, Mario, ‘Isaiah Berlin on Philosophical Clarification’, in Gianfranco Pellegrino (ed.), Legitimacy, Democracy, and Disagreement: Essays in Honour of Sebastiano Meffetone (Rome, 2018: LUISS University Press), 171–9


Hardy, Henry, In Search of Isaiah Berlin: A Literary Adventure (London, 2018: I.B.Tauris; repr. by Tauris Parke 2019 [with corrections], 2020 [paperback, with new appendix])
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Mori, Tatsuya, Sisou no seijigaku: Isaiah Berlin kenkyu [The Politics of Ideas: A Study of Isaiah Berlin’s Political Thought] (Tokyo, 2018: Waseda University Press)
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Demontis, Luca, ‘ “The Mad Dream of Sociology”: Isaiah Berlin e le scienze sociali’, Ph.D. thesis, Fondazione Collegio San Carlo di Modena (2018)

Worthington, Michelle, ‘The Pluralist Corporation’, Ph.D. thesis, ANU, 2018

More Flourishing - supplementary letters 1928-1946
An online selection of the more significant letters to have emerged since the publication of Flourishing: Letters 1928-1946 (London, 2004: Chatto & Windus; London, 2005)
- First posted 20 January 2019
- Last updated (i.e. this edition) 13 June 2025
The four published volumes of Berlin's letters focus on the outgoing letters, i.e. those written by him. Where we have the other side of the correspondence, and have been able to secure the necessary copyright permission, the online supplements will now also include a selection of the more important letters written to Berlin.
- This update includes 13 letters from IB's friend and contemporary, the Oxford philosopher A. J. Ayer, all but one written in the 1930s: the exception is from March 1940, when Ayer wrote from the Guards Depot at Caterham, in Surrey, where he underwent preliminary training with 16 Coy. Coldstream Guards
To see this Supplement click 'View Document' below

Supplement to Flourishing: Letters 1928–1946, "What about Daphne?" Correspondence with H. G. Nicholas 1942–1945
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More Enlightening - supplementary letters 1946-1960
An online selection of the more significant letters to have emerged since the publication of Enlightening: Letters 1946–1960 (London, 2009, Chatto and Windus; London, 2011: Pimlico)
- First posted 30 January 2019
- Latest updated (i.e. this edition) 13 June 2025
The four published volumes of Berlin's letters focus on the outgoing letters, i.e. those written by him. Where we have the other side of the correspondence, and have been able to secure the necessary copyright permission, the online supplements will now also include a selection of the more important letters written to Berlin.
- This update includes two letters from IB to his friend and colleague, the philosopher A. J. 'Freddie' Ayer, and one letter from Ayer to IB, June 1946.
To see this Supplement click 'View Document' below

More Building - supplementary letters 1960-1975
An online selection of the more significant letters to have emerged since the publication of Building: Letters 1960–1975 (London, 2013: Chatto and Windus; London, 2016: Pimlico)
- First posted 19 December 2019
- Latest updated (i.e. this edition) 13 June 2025
The four published volumes of Berlin's letters focus on the outgoing letters, i.e. those written by him. Where we have the other side of the correspondence, and have been able to secure the necessary copyright permission, the online supplements will now also include a selection of the more important letters written to Berlin - among them, to date, are letters from the Riga-born Harvard philosopher Judith Shklar, and the US diplomat and historian George Kennan.
- Included in this update is an interesting letter from IB to his friend, the Oxford philosopher A. J. Ayer, July 1962, on Soviet attitudes to Western thinkers: 'But I am told you have been called by an animal name – say a hyena with a typewriter – past repentance'.
To see this Supplement click 'View Document' below.

More Affirming - supplementary letters 1975-1997
An online selection of the more significant letters to have emerged since the publication of Affirming: Letters 1975–1997 (London, 2015: Chatto and Windus; London, 2017, Pimlico)
- First posted 18 January 2019
- Last updated (i.e. this edition) 18 June 2025
The four published volumes of Berlin's letters focus on the outgoing letters, i.e. those written by him. Where we have the other side of the correspondence, and have been able to secure the necessary copyright permission, the online supplements will now also include a selection of the more important letters written to Berlin, and where possible those about him:
- Included in this supplement are 3 letters from IB to his friend and colleague, the philosopher A. J. 'Freddie' Ayer: they include letters of condolence on the death of Ayer's daughter Valerie (in 1981), and his wife Vanessa (in 1985). Also included here are letters to IB from the Riga-born Harvard philosopher Judith Shklar, and the US diplomat and historian George Kennan.
To see this Supplement click 'View Document' below

Supplement to Affirming: 'More Explaining: Isaiah Berlin on his own ideas'
- Letters and other writings with specific relevance to the understanding of Berlin's thought, which were not included in Affirming
- First posted in Isaiah Berlin Online 18 January 2019
- Last revised (i.e. this edition) 16 October 2021

'Music Chronicle' - an online collection of the five articles published in Oxford Outlook 1930–2 under the pseudonym ‘Albert Alfred Apricott’ (‘A.A.A.’ except in the first case)
- i) Oxford Outlook 10 no. 53 (November 1930), 616–27 (see Bib.2(b))
- ii) Oxford Outlook 11 no. 54 (March 1931), 49–53 (see Bib.6)
- iii) Oxford Outlook 11 no. 55 (June 1931), 131–5 (see Bib.7)
- iv) Oxford Outlook 12 no. 57 (February 1932), 61–5 (see Bib.12)
- v) Oxford Outlook 12 no. 58 (May 1932), 133–8 (see Bib.13)

Moments Musicaux: Occasional Essays on Opera (2019): an online collection of musical notes previously published separately as:
- 'Mozart at Glyndebourne' (Bib.186)
- 'Tchaikovsky and Eugene Onegin' (Bib.124)
- 'Khovanshchina' (Bib.89)
- 'Performances memorable — and not so memorable' (Bib.144)
- 'Surtitles' (Bib.192(b) )
See also the more comprehensive collection 'Isaiah Berlin on Music', Bib.299
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Letters to David Carver and Edward Crankshaw, in Paolo Mancosu, ‘P.E.N. International, Isaiah Berlin, and the Ivinskaya Case’
- from his blog Inside the Zhivago Storm
- see also OA.1245, Paolo Mancosu, ‘P.E.N. International, Isaiah Berlin, and the Ivinskaya Case’
