LISBON, PORTUGAL - JUNE 26:  ECB President Mario Draghi arrives to have a conversation with students of selected universities at the Lisbon School of Economics and Management (ISEG), prior to the opening of the ECB Forum on Central Banking, on June 26, 2017 in Lisbon, Portugal. The 2017 European Central Bank Forum on Central Banking is being attended by some 150 central bank governors, academics, financial journalists and high-level financial market representatives and it focuses on investment and growth in advanced economies, a key topic of debate in the areas of both economics and policymaking. (Photo by Horacio Villalobos - Corbis/Corbis via Getty Images)