Bennis stood among the world’s leading experts on leadership. A prolific author, he wrote nearly 30 books on business administration, management theory and organizational leadership. On Becoming a Leader, one of Bennis’ bestselling works and a venerable classic in the field, was reprinted in 2009 and is widely considered to be a seminal text. The majority of his works were published during his 35-year tenure at USC, including An Invented Life, which earned him a Pulitzer Prize nomination. He served as an adviser to five U.S. presidents.