The author of this site is Paul Herrick. Paul has been teaching philosophy and logic at Shoreline Comm College since 1983. He received his a PhD in Philosophy from the University of Washington. He is the author of six textbooks in Philosophy and logic, including The Many Worlds of Logic (Oxford University Press, 1999), Introduction to Logic (Oxford  University Press, 2012) and Think With Socrates: An Introduction to Critical Thinking (Oxford University Press , 2014).