The primatologist, the subject of a new documentary, gets angry that humanity has killed off thousands of orangutans. She’s frustrated that we, in our quest to grow and conquer, have changed the planet forever.

“Goodness, if we could spend the same money learning about the world that we spend on wars…. We’re so stupid aren’t we?” she told HuffPost in a recent interview. “We seem to have lost the connection between our clever brains and our hearts.”

But Goodall, just a few weeks shy of her 84th birthday, still has faith.

“People desperately want hope. When you lose hope, what’s left in life?” she said. “We truly have harmed the world, but I still think there’s a window of time for us to try and turn things around. It can never get back to the way it was … but we have to try.”