David Tennant

Unlike other enduring characters such as 'Sherlock Holmes' or 'Tarzan,' being the 'Doctor' allows you a certain freedom that is both very demanding and very thrilling. It allows you to make the character using elements of yourself.

I like people who don't accept boundaries. Like Florence Nightingale. And Napoleon or Louis XIV, though I'm not sure how much I'd have liked to meet them. I admire people who aren't circumscribed by circumstance.

I have a lot of blurring between fiction and non-fiction in so many of my works. For example, my first novel, 'When Nietzsche Wept,' has a great deal of non-fiction in it. I didn't create many characters at all. Almost all of them are historical characters that actually existed.