Google CEO Sundar Pichai takes the stage during the presentation of new Google hardware in San Francisco, California, U.S. October 4, 2016.

The Google engineer fired for writing a controversial memo about diversity has gone beyond referring to the company as an "echo chamber" that won't stand for dissent and now says it's "almost like a cult."

In an opinion piece for the Wall Street Journal, James Damore gave his explanation for why he was fired, taking a shot at the company's culture and its famous motto.

"For many, including myself," he wrote, "working at Google is a major part of their identity, almost like a cult with its own leaders and saints, all believed to righteously uphold the sacred motto of 'Don't be evil.'"

Damore was fired at the start of this week after 3 1/2 years as an engineer for a post he wrote, laying out his view that men are biologically more well-suited than women for many tech jobs.

He's not apologizing.