Jolies, 39, is known for promoting humanitarian causes and feels it is important to take up responsibility if one wants a change in the system, reported Vanity Fair magazine.
"When you work as a humanitarian, you are conscious that politics have to be considered. Because if you really want to make an extreme change, then you have a responsibility. But I honestly don't know in what role I would be more useful-I am conscious of what I do for a living, and that (could) make it less possible," she said.