University Presentations
Commencement Address, St. Gregory College Preparatory School, Tucson, AZ, May 2007
Tribute to Regents Professor Doug Canfield
Looking Back: College of Nursing Tragedy
Commencement Address: UA South, May 2007
Achieving Excellence Costs Money
University of Arizona: Archipelago of Innovation (PDF file)
Tribute to William R. Dickinson
Comments on Rock Slabs at New UA Poetry Center
Commencement Address, Carelton College, 2012
Commencement Address, Jackson School of Geosciences, The University of Texas, Austin, May 2014