Morris Raphael Cohen (1880?1947) was Professor of Philosophy at City College of New York from 1912 to 1938. The most prominent figure in American philosophy and philosophic studies of his era, he also taught at the University of Chicago and The New School for Social Research. His other books include Reason and Nature, Law and the Social Order, and The Meaning of Human History.

Concise and readable, this introductory treatment examines logic and the concept of abstract reasoning as applied to the empirical world, as well as logic and statistical method, probability, scientific models, and more. 1944 edition.