KEY POINTS
  • Former Fed Chairman Alan Greenspan told CNBC that he's worried about inflation and the government's swelling budget deficit.
  • On the coronavirus pandemic, he said, "We know very little so we pretend a great deal."
  • The government may be "underestimating" the size of future deficits, Greenspan added.

Former Federal Reserve Chairman Alan Greenspan said his biggest economic concerns in the U.S. are inflation and the budget deficit.

"My overall view is that the inflation outlook is unfortunately negative and that's essentially the result of entitlements crowding out private investment and productivity growth," Greenspan said in an interview Thursday on CNBC's "Squawk on the Street."