America is much less violent than it was 20, 30 years ago, and immigration is much less a problem than it was not just 20, 30 years ago, but when I came in as president.

I do think Brexit vote speaks to the ongoing changes and challenges that are raised by globalisation.

It is my judgment that had I spent the first two years trying to get a single-payer system, all those folks who now have health insurance that didn't have it would still be uninsured. And those are millions of people whose lives are impacted right now.

Just because we have the best hammer does not mean that every problem is a nail.

That's what building a body of work is all about. It's about the daily labor, the many individual acts, the choices large and small that add up over time, over a lifetime to a lasting legacy. It's about not being satisfied with the latest achievement, the latest gold star, because the one thing I know about a body of work is that it's never finished. It's cumulative. It deepens and expands with each day you give your best. You may have setbacks and you may have failures, but you're not done.

Steve was among the greatest of American innovators - brave enough to think differently, bold enough to believe he could change the world, and talented enough to do it...The world has lost a visionary. And there may be no greater tribute to Steve's success than the fact that much of the world learned of his passing on a device he invented.

Perfect is unattainable. Better is possible.