You can download an audio file of the lecture in .mp3 format by clicking here. If you'd like to save the file to your computer, you can do so by right-clicking or ctrl-clicking on the link and selecting "Save as."

Photos from Prof. Butler's visit to Champaign-Urbana follow below.

(1) Lunch party for Prof. Butler at the Center for Advanced Study. Pictured: (l. to r., standing) Jon Ebel, Janet Rasmussen, Rachel Rasmussen, Cody Harris, Jon Butler, Chris Higgins, Walter Feinberg, David Price, Wayne Pitard, Nathan Raybeck; (l. to r., kneeling) Robert McKim, Alexander Mayer
(1) Lunch party for Prof. Butler at the Center for Advanced Study. Pictured: (l. to r., standing) Jon Ebel, Janet Rasmussen, Rachel Rasmussen, Cody Harris, Jon Butler, Chris Higgins, Walter Feinberg, David Price, Wayne Pitard, Nathan Raybeck; (l. to r., kneeling) Robert McKim, Alexander Mayer
(2) Prof. Butler delivering the 2009 Thulin Lecture.
(2) Prof. Butler delivering the 2009 Thulin Lecture.
(3) Students and others at the reception following the 2009 Thulin Lecture, including Jay Geyer and Ryan Alexander.
(3) Students and others at the reception following the 2009 Thulin Lecture, including Jay Geyer and Ryan Alexander.
(4) Students and others at the reception, including (facing the camera) Craig Kreutzer and Maggie Dunleavy.
(4) Students and others at the reception, including (facing the camera) Craig Kreutzer and Maggie Dunleavy.