" When I noticed other people, I wondered what it was like to be alive. They did not know, could not know, how I felt inside. My shell still passed for normal. I felt like I should scream for help, someone should help, but I knew that the time for screaming had passed. Best to just keep on walking, walking dead, one of the few things I could still do. So I kept walking. "

― , The Depths: The Evolutionary Origins of the Depression Epidemic