Donald Trump said Thursday that Ben Carson’s self-described “pathological temper” is incurable — and compared it to the sickness of a “child molester.”

“It’s in the book that he’s got a pathological temper,” Trump told CNN. “That’s a big problem because you don’t cure that. As an example: child molesting. You don’t cure these people. You don’t cure a child molester. There’s no cure for it. Pathological, there’s no cure for that.”

In his 1990 autobiography Carson attributes violent behavior in his youth to his “disease,” a “pathological temper.”

Another GOP candidate, Carly Fiorina, blasted Trump in a tweet.

“Donald, sorry, I’ve got to interrupt again,” she wrote, referring to his complaint that she was “interrupting everybody” during the latest debate. “…all the money in the world won’t make you as smart as Ben Carson.”

Donald, sorry, I've got to interrupt again. https://t.co/zofyRuHGvX

— Carly Fiorina (@CarlyFiorina) November 13, 2015

Meanwhile, Trump on Thursday blasted the administrators who resigned under pressure at the University of Missouri as “weak, ineffective people.”