A life like Nixon's is filled with shame and filled with glory. He loved to quote Teddy Roosevelt: "He was a man; sometimes right, sometimes wrong, but he was a man." I love that line.

Each actor requires a different language.

My ego is nothing - look what Alexander the Great achieved. And I felt he was a figure outside time, a figure we don't even understand, because he's frankly pre-Christian, and his concepts of honor go back to Homer.

Cynicism was a school in Greece - the Cynics. Diogenes is a famous Cynic. There was a strong belief in nihilism and narcissism. Those are old schools too.

There are a few versions of the Alexander movie on video, only two that matter. One is from 2007, and then the one from 2014. It's called "the Ultimate Cut." That is the best version in my opinion. I was unsatisfied with the original theatrical release. It was rushed. It was my fault. I accepted it. I always felt it should have been done the way Tarantino did Kill Bill. I thought, we should release this in two parts with an intermission. But at that time, in 2004, it was impossible.

Football is mesmerizing, because it's a figurative war. You go in one direction till you get there, but you get there as a team, not as an individual. Players bond whether they're black or white, much as soldiers do.

I definitely love history. I'm not formally trained or educated in history, but you could say I did go back to college in 2008 to do Untold History of the United States. That took five years. Co-author Peter Kuznick has been teaching history for something like 35 years, at American University and other places. His group of researchers brought me into contact with a lot of books.