Jerzy Perzanowski's ideas were based on an original blend of logic and ontology in what he called onto/logic, where the slash is meant to suggest a quotient of ontology by logic. Perzanowski began as a logician, his early works being on modal logic, then gradually shifted his interest to "logical philosophy", meaning not so much philosophy of logic as philosophy informed by logic. Perzanowski was a rare breed of analytical philosopher who thought that a philosophical "theory of everything" was worthwhile. In this systematic spirit, he began with method. He presented his "method of total analysis and synthesis" quite simply: reduce the object of research to its simplest possible constituents, and then combine them in some way. Better still, combine them in every possible way, thereby producing a space of possibilities analogous to (and in certain cases identical with) the logical space. Thus, analysis and synthesis differ from a trivial disassembly and reassembly.
Jerzy Perzanowski (1943-2009) studied philosophy and mathematics at Jagellonian University (Cracow). During the period 1992-2004, Perzanowski was Head of the Department of Logic of Torun Universitys. In 2005, Perzanowski returned to the Department of Logic of Jagellonian University, and in 2006-2009 he was also appointed Head of the Department of Logic of the Jesuit University Ignatianum (Cracow).
