Bachelor of Arts, Oberlin College, 1950; student, Northwestern University, 1949, 53; Master of Arts, University of Michigan, 1951; Doctor of Philosophy, University Michigan, 1956; student, Oxford (England) University, 1956-1957.
Instructor philosophy, University of Michigan, 1957-1958; faculty, University of Illinois, Urbana, since 1958; professor philosophy, University of Illinois, since 1968. Visiting associate professor Purdue University, 1968. Visiting professor U. Western Ontario, 1969-1970.
Member American Philosophical Association (chairman program committee Western division 1977), Illinois Philosophical Association (president 1988-1989), Linguistic Society of America.
Married Elizabeth Robin McReynolds, February 5, 1955. Children– Marcia E., Dewey, John H., George H.