Here's the truth: even if countries like the United States curb our emissions, if growing countries like India - with soaring energy needs - don't also embrace cleaner fuels, then we don't stand a chance against climate change.

But today, just a few years into the twenty-first century, we already find ourselves in a different and precarious position. As revolutions in communications and technology have broken down barriers across the world, it has given more power to both our competitors and our enemies.

Here's what I can tell the American people: 95 percent of you will get a tax cut. And if you make less than $250,000, less than a quarter-million dollars a year, then you will not see one dime's worth of tax increase.

I try to make it a rule not to meddle in other people's politics.

The elevation of appearance over substance, of celebrity over character, of short term gains over lasting achievement displays a poverty of ambition. It distracts you from what's truly important.

There is no doubt that the actions of ISIS are designed to amplify their power and the threat that they pose. That helps them recruit. That adds in the twisted thoughts of some young person that they might want to have carry out an action that somehow they're part of a larger movement.

We cannot drill our way out of our addiction to oil.