U.S. senator from New Jersey, Cory A. Booker, himself a popular and gifted orator, related his father’s philosophy on public speaking as follows: “My dad worked for IBM. He said, ‘Look, I can’t sell products I don’t believe in. People will see right through me. But if I’m passionate and have a deep conviction about what I’m doing, I’m the greatest salesman there is.’”13 What qualities is Senator Booker describing, and why are they important in business?