He left a 141-page memoir and a YouTube video that he posted online before his killing spree on Friday. Elliot Rodger, 22, was identified as the shooter in a mass shooting in Isla Vista, California, on Friday, which left the gunman, four men and two young women dead and several others wounded.

“I don’t know why you girls have never been attracted to me, but I will punish you all for it,” he said in the video. “I’m the perfect guy, and yet you throw yourselves at all these obnoxious men, instead of me, the supreme gentleman.”

Below is another video recorded by Rodger.

California YouTube Video