"The new details from Mr. Gutierrez about Mr. Loughner — including his philosophy of anarchy and his expertise with a handgun, suggest that the earliest signs of behavior that may have ultimately led to the attacks started several years ago.
Mr. Gutierrez said his friend had become obsessed with the meaning of dreams and their importance. He talked about reading Friedrich Nietzsche’s book “The Will To Power” and embraced ideas about the corrosive, destructive effects of nihilism — a belief in nothing. And every day, his friend said, Mr. Loughner would get up and write in his dream journal, recording the world he experienced in sleep and its possible meanings.

“Jared felt nothing existed but his subconscious,” Mr. Gutierrez said. “The dream world was what was real to Jared, not the day-to-day of our lives.”

http://www.nytimes.com/2011/01/12/us/12loughner.html?_r=1