Julius Wambua Mbithi, PhD., is the author of Critical Thinking. He is a lecturer and Chairman, Department of Social Sciences, Machakos University. He has taught philosophy as a full-time lecturer at the Salvatorian Institute of Philosophy and Theology (now Jordan University College, Morogoro, Tanzania). As well, he has worked as a part-time lecturer at the Consolata Institute of Philosophy, Nairobi; Kisii University, Laikipia University, and Kiriri Women University of Science and Technology. He has been a visiting lecturer at Redemptoris Seminaries in Kitwe, Zambia, and in Dar re Salaam, Tanzania. He has authored and published a number of works in critical thinking, political philosophy, and African philosophy.