John Boehner harshly denounced Sen. Ted Cruz as “Lucifer in the flesh” during a discussion Wednesday night at Stanford University.

The former Speaker of the House discussed the future of the Republican Party during the discussion — but he saved his strongest criticism for the Texas senator and GOP presidential candidate, reported the Stanford Daily.

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“I have Democrat friends and Republican friends,” Boehner said. “I get along with almost everyone, but I have never worked with a more miserable son of a bitch in my life.”

Boehner said he and Donald Trump had played golf together and were “texting buddies,” but he was a bit ambiguous about his relationship with Ohio Gov. John Kasich.

“He requires more effort on my behalf than all my other friends,” Boehner said. “But he’s still my friend, and I love him.”