I tend to place my own value in spirituality rather than religiosity.

The difference between authorized and unauthorized biographies is the difference between riding in carriage or squatting in steerage.

A hero is someone we can admire without apology.

The rumors of Frank Sinatras violence and his ties to organized crime were such that journalists joked in print about me ending up in concrete boots and sleeping with the fishes if I proceeded to write his biography.

Once I decide to do something, I can't have people telling me I can't. If there's a roadblock, you jump over it, walk around it, crawl under it.

Most historians agree that Abraham Lincoln was the most important man to ever occupy the White House because he abolished slavery and kept the states united through a bloody civil war.

Kennedy was haunted by the Bay of Pigs invasion but carried the country through the Cuban Missile Crisis. He later increased the number of U.S. military advisers to South Vietnam to more than 16,000.