1930 – 2014
Joseph S. Ullian was an American analytic philosopher best known for his collaboration with W.V.O. Quine on epistemology and the nature of belief. He worked primarily in logic, philosophy of science, and the theory of reasoning, with sustained interest in the structure of analogical and inductive inference.
Co-authored 'The Web of Belief' with W.V.O. Quine, a foundational text in epistemology
Developed analyses of analogical reasoning with attention to its Aristotelian roots
Contributed to the logic of hypothesis formation and scientific reasoning
Examined the relationship between deductive structure and informal inference patterns