With the changing economy, no one has lifetime employment. But community colleges provide lifetime employability.

To young people: you have to stay encouraged.

We are willing to uphold principles that have resulted in unprecedented prosperity and security throughout Europe and around the world. With the threat of climate change only becoming more urgent, Angela [Merkel] and I focused on the need for American and E.U. leadership to advance global cooperation.

You have social media and the Internet and immigration and so, suddenly, cultures are clashing and people feel as if they're less familiar with the people around them. That causes social anxieties.

I continue to believe when I said in Hanover, that the E.U. remains one of the world's great political and economic achievements, and that those achievements should not be taken for granted.

America is number one in wind power.

I think it's fair to say that my temperament is steady - and on the buoyant side.