Toruń, 5 April 1965
The next conference on the History of logic will be held in Cracow on 23 and 24 April this year. The conference will finish on Saturday before noon, so the afternoon will be free, and if it suits you, I’ll give a lecture at the Cracow Branch of the Polish Philosophical Society on the topic ‘On the unity of science’. I stipulate, however, that I won’t blame you if it’s not possible for this lecture to take place. On Sunday morning, I’d like to organise a meeting of the Publishing Committee of the Works of Kazimierz Twardowski.
My wife and I send cordial regards to both of you