In a new USA Today interview, she says: "There's certainly a side of me that isn't completely ..." Pausing to search for the right word, she then adds, "Sane. Or completely 'even' all the time. We all have our dark sides."'
In her case, Jolie says her dark side was exposed in the public eye.
"I grew up in front of everybody, really," she says. "The big years of exploration."
Jolie famously dived into a pool in her Golden Globes dress after winning for her role as a drug addicted model in 1998's Gia. And then there was all that bizarre Billy Bob stuff.
"There was a certain madness I was going through," says the actress. "I learned a lot about myself." But she isn't embarrassed. "People tend to sum up times in your life and simplify," she says. "I would say there's a way of being bold when you're young that seems very brave. ... What's perceived as tough is a very funny thing. I think to be a parent is one of the scariest, boldest things to do, as opposed to, um, getting a tattoo. ... Much more than jumping into a pool when you're 20."
Pitt, 46, "has been a huge influence on me," she adds. "In all ways, from my parenting to my art, to ... everything."