Former Secretary of Defense Robert Gates will give the third annual Tom Johnson lecture at 6 p.m. Thursday in the auditorium at the LBJ Library.

Gates, author of “Duty,” has recently published another book, “A Passion for Leadership: Lessons on Change and Reform From Fifty Years of Public Service.” He served as secretary of defense under President George W. Bush and President Barack Obama.

He was also president of Texas A&M University from 2002 to 2006 and is serving as the chancellor of the College of William & Mary.

Before the event, Gates will participate in a book signing of “A Passion for Leadership” (Knopf, $27.95). Book sales begin at 4:45 p.m. in the upper auditorium lobby, and he’ll be signing from 5 to 5:45 p.m. Proceeds benefit the LBJ Presidential Library.

The event is free and open to the public. The library will have 125 tickets for the public available starting at 9 a.m. Tuesday.

In “A Passion for Leadership,” Gates makes the case that government bureaucracies can be reformed, and he offers routes to such reforms.

He has led change at the CIA, Texas A&M and the Department of Defense, and he offers an insider’s look at how major bureaus, organizations and companies can be transformed.

Free parking is available in the LBJ Library visitors’ lot (Lot #38), and after 4 p.m. in Lots 37 and 39. The LBJ Auditorium is located on the lower level of the LBJ complex at 2313 Red River St. You may access the auditorium through the lobby of the LBJ School of Public Affairs or through the south auditorium doors by the LBJ Fountain.