Review
The author's task is to analyze the principle of contradiction in Aristotle through the glasses of Jan Lukasiewicz. The book makes several interesting points. In particular, the author compares various views on the topic being analyzed as well as various translations of Aristotle's related writings. Perhaps the most interesting fragment concerns Lukasiewicz's criticism of Aristotle's proofs. The author correctly points out that Lukasiewicz confuses here two meanings of "proof", and that his criticism of the Stagirite's arguments for the principle of contradiction is unjustified. . . . Also one must agree with the author's criticism of Lukasiewicz's view that the principle of contradiction is psychological rather than logical. -- Jan Wolenski (Jagiellonian University)
