Icahn also weighed in on a story in The New York Times examining Bill Ackman's $1 billion short bet on Herbalife.
"Look, I think just going, seeing, you know, what Ackman has been doing makes you really wonder why he's doing this. I mean, it's gone to a point that I think is almost bordering on the insane. I don't understand where he's going and what is happening here. He's just on some kind of a crusade," Icahn said. "What I do is say, 'We need corporate governance in this country.' I'm on that crusade, but that is a crusade that hopefully you could win. I don't know what he wins here. What does he hope to get? I don't understand where he's going."
Last year, Icahn and Pershing Square's Ackman duked it out on live CNBC, and Icahn later announced that he was taking a position on Herbalife.
(Read more: Ackman, Icahn hurl accusations, insults)
"He hopes it goes to zero. But his going out and ranting and raving about it, how is that going to affect it?" Icahn said. "I own a lot of the stock, and I never sold a share. But you know something? I believe that sooner or later, it can't go on this way with Ackman, you know, every week coming out with a new meeting. I think that also is very detrimental to the company. And I think this has got to come to a solution, in my opinion."
In response to a request for comment from Ackman, CNBC.com received a statement from Pershing Square that did not directly address Icahn's comments.
"Pershing Square believes that Herbalife is a pyramid scheme based on over two years of research," the company said in an e-mailed statement. "We continue to share our research and findings with regulators, policymakers, law enforcement and other interested parties to shine a light on the company's and its distributors' illegal practices."
Herbalife has steadfastly denied Ackman's allegations.
— By CNBC's Bruno J. Navarro. Follow him on Twitter