I think we need missile defense. But I want to make sure it works, that it's cost effective, that the technologies are operable, that it's our best possible strategy, and that hasn't been shown.

I will never turn Medicare into a voucher. No American should ever have to spend their golden years at the mercy of insurance companies. They should retire with the care and dignity they have earned.

We don't have this huge footprint, we are less likely to be targeted as, you know, occupiers [in Afghanistan and Iraq].

[With Donald Trump] we are moving into an era where a lot of people get their information through tweets and sound bites and some headline that comes over their phone.

The problem is that, over time, big pieces of business that have to get done without leadership from Washington, don't get done.

In December, I agreed to extend the tax cuts for the wealthiest Americans because it was the only way I could prevent a tax hike on middle-class Americans. But we cannot afford $1 trillion worth of tax cuts for every millionaire and billionaire in our society. We can't afford it. And I refuse to renew them again.

And to those nations like ours that enjoy relative plenty, we say we can no longer afford indifference to the suffering outside our borders; nor can we consume the world's resources without regard to effect. For the world has changed, and we must change with it.