I was eating with the help of a nutritionist so I was definitely putting in the appropriate calories and vitamins and minerals into my body; however, it was still so little that if I had the tiniest piece of sugar, my brain would go crazy. If I had some alcohol during the run of that play, my brain would go crazy.

I'm obsessive about my job and I want it to be as great as it can possibly be, especially right now in these early parts of my career.

For some roles, like when I was doing Bent, that was harder and I didn't find that helpful because I was so calorie deprived, my brain wasn't getting food. I would end up not being as focused or as clearheaded as I would have liked to be during the run of the performances. I would lose those quality impulses that you lean on when you're acting because of malnutrition. basically. But I looked skinny.

I had done a little bit one other time. This character [in Jack Reacher] is a psychopath, but I had been hired by Carlton Cuse and Randall Wallace.

Sociopaths are more complicated psychopaths; the difference between a sociopath and a psychopath is a sociopath is incredibly charming. There are a lot of sociopaths that are CEOs. They don't necessarily kill people but they're able to walk into a big social function and make everybody think they're the kindest, coolest, smartest, most interesting person in the room.

I read as many books about the psychology of a psychopath as I could and I researched what exactly happens to soldiers.

When I look at myself in the mirror, I don't see the bad guy.