Talk of the Times and Tau Talks are open forums on current events and philosophical issues led by members of Phi Sigma Tau, the philosophy honor society. 

The Acorn Symposium Dialogues are co-sponsored by the Department of Philosophy, the Philosophy Dialogue Series, and The Acorn: Philosophical Studies in Pacifism and Nonviolence. 

The Philosophy Dialogue Series Program Endowment supports the Philosophy Dialogue Series and its outreach activities at the San Marcos Public Library. 

Co-sponsors of the Philosophy Dialogue Series are the American Democracy Project, College of Liberal Arts, Common Experience, Gina Weatherhead Dialogue Fund, Alliance, Step Up For State, Sustainability Studies, The Alkek Library, Humanities Texas, National Endowment for the Humanities, ΦΣΤ (Phi Sigma Tau, the philosophy honor society), University Seminar, The New York Times, Honors College, Provost and Vice President for Academic Affairs, and Vice President for Student Affairs.