Between 1943 and 1992, Martin published 16 books and about 240 papers (of which 179 were included in his books) on an extraordinary range of subjects, including aesthetics, logic, the foundation of mathematics, metaphysics, syntax/semantics/pragmatics, the philosophy of science, phenomenology, process philosophy, theology, Frege, and Charles Sanders Peirce. Martin preached and practiced that philosophy should be done formally, by employing first-order logic, the theory of virtual sets and relations, and a multiplicity of predicates, all culminating in an event logic. Starting with the papers reprinted in his 1969 "Belief", Martin argued that the Frege's "Art des Gegebensein" was crucial to his thinking. Just what this "Art" entailed remains to be elucidated.