Piotr Stalmaszczyk is a Professor of English language and linguistics at the University of ¿odz (Poland), where he holds the Chair of English and General Linguistics. His research is concerned predominantly with linguistic methodology and the philosophy of language and linguistics. Luis Fernández Moreno studied philosophy at the Complutense University of Madrid and the Free University of Berlin. He works as a Full Professor at the Complutense University. His research mainly concerns the philosophy of language, philosophical logic and philosophy of science.