My first meetings with him were painful, truly. Partially this was due to the fact that we belonged to various generations of scholars in logic but the real cause was quite different. I mean, Professor Suszko was not so easy to understand for students like myself in the early 70s. And, the more baldly one had a feeling that what he was doing was of great importance the more hurry it was. The kind of approach 1~. Suszko presented was very subtle and located within the framework of entailment relation as an extension of Tarski's methodological ideas, dating back to the thirties and connected with the notion of consequence operation. That he was a fierce follower of that background up to his last days was proved in the last published article The ~rcgean Axio~n a~d2olish Mathematical ,Logic i~ 1920s which appeared in Studia ~ogica in 1977.
l~. Suszko was so fascinated with his discovery --the non-~regea~ logic -that finally his enthusiasm permitted me to break the hedge of my misunderstanding him. Subsequently, it was a big joy for me to pass step by step through the programme of his Abolition of the .~regean Axiom with presentation against the background of the historical development of modern logic and recent research in possible worlds semantics~ modal logi% inten~ionality and entailment. All that in order to criticize %hat messy abyss with all its diffuse ghosts of ambiguity~ vague flexibility~ intentionality and modality". I would be%or stop myself now telling that when the "journey" was finished I together with a friend of mine, J. Zygmtmt~ wrote some 20 pages of an enthusiastic review of Abolition for Erkenntnis.
I am sorry to constate that even nowadays his non-Fregean logics are not so widely known by the logicians as they s~rely deserve. I am also sorry to realize that five years ago just when I began to understand him better Roman Suszko passed away.
G~ZEGOt~Z ]~ALII~OWSKI ~ebruary 1984
Studia J~ogica XLIII, 4