My books are based 98 percent on documentary evidence.

There are no faster or firmer friendships than those formed between people who love the same books.

I spend several years trying to get inside the brain and heart of my subjects, listening to the interior monologues in their letters, and when I have to bridge the chasms between the factual evidence, I try to make an intuitive leap through the eyes and motivation of the person I'm writing about.

Documentary evidence says where there is smoke there is fire, be it holy smoke or otherwise.

We are very confident that, based on the evidence, we should clearly prevail.

There are a lot of myths about what the evidence is in this case, ... Some of them are misunderstandings based upon erroneous media reports, some spring from confusion in the evidence itself, and some are the result of concerted partisan distortion.