When Robert Gates, the only Secretary of Defense ... he set down principles that his successors would be wise to follow. Throughout the book, Gates brings the story back to the troops.

Former Secretary of Defense Dr. Robert Gates recently stopped by Business Insider to talk about his new book "A Passion For Leadership: Lessons on Change and Reform From Fifty Years of Public Service.

An curved arrow pointing right. Former Secretary of Defense Dr. Robert Gates recently stopped by Business Insider to talk about his new book "A Passion For Leadership: Lessons on Change and Reform ...