Watch CNBC's full interview with Wharton's Jeremy Siegel on inflation

Jeremy Siegel, professor of finance at the University of Pennsylvania’s Wharton School of Business, joins CNBC's 'Squawk Box' to break down his expectations for the Federal Reserve's neutral interest rate to tackle inflation. "If the Fed panics at some point, slams on the break, we're going to be going through the windshield," Siegel tells CNBC.