Speaking at Yale
ECB measures, including the deposit rate at its current negative level is proving to be effective in lifting inflation
It's difficult to know how long these low interest rates will persist but it seems possible that they will be low for quite some time
Central bankers should be mindful of a potential economic lower bound at which the detrimental effects of low rates on the banking sector outweigh their benefits
Nearly every central banker is worried about rates staying too low for too long yet no one has ever put a timeline on the "too long" part.