Mordchaj Wajsberg

From Philosophical Remarks on Many-Valued Systems of Propositional Logic 1930 by Jan Łukasiewicz

...     The three-valued system of propositional logic with quantifiers, which owing to the research of Tarski and Wajsberg can be represented axiomatically, is the simplest example of a consistent logical system which is as different from the ordinary two-valued system as any non-Euclidean geometry is from the Euclidean.

Polish Logic 1920-1939, Storrs McCall,
Oxford 1967, page 62.