I think that there are just people who are hurting other people, sometimes for the best of intentions and sometimes for the worst. In different times in my life, I've been the hero and I've been the villain. I also think that we're all evil sometimes.

Andy [Hallett] was a real man - you can tell an adult by how they deal with pain or adversity. Andy's eyeballs gave him searing pain all day every day because of the contacts they used. He was every moment a gentlemen; laughing and joking, wiping the tears from his eyes.

Being a hero doesn't mean you succeed in saving the day. It just means you tried.

One of the best things about humans is we recognize patterns, so we get things like science, music, philosophy. One of the worst things is that we see patterns that are not there so we get things like racism, homophobia and Jerry Falwell.

For me, chemistry is trust. If you have trust you can risk together. It's like a partnership and it means you can have fun together while jumping off a mountain. I have not always been able to get good trust with an acting partner. One of the best was Juliet Landau; I always felt safe with her. Chemistry has nothing to do with physical attraction - that often gets in the way.

I don't know if any of us are mature enough to handle the brutal honesty of what's inside other people's heads.

Joss Whedon said to me, 'If you think you are taking over the show, you have got another think coming.' He said, 'You are here only because I don't want to kill a villain off every week. I want my villains to be more interesting and multifaceted and then die.'