Irving Marmer Copi (/ˈkɒpi/;[3] né Copilovich or Copilowish; July 28, 1917 – August 19, 2002) was an American philosopher, logician, and university textbook author.
Copi studied under Bertrand Russell while at the University of Chicago.
Assigned to teach logic, Copi reviewed the available textbooks and decided to write his own.
A reviewer noted that it had an "unusually comprehensive chapter on definition" and mentions that "the author accounts for the seductive nature of informal fallacies".
[6] The textbooks proved popular, and a reviewer of the third edition noted over 100 new exercises added.