I want to control our own energy by developing oil and natural gas but also the energy sources of the future.

It [the Constitution] didn't break free from the essential constraints that were placed by the founding fathers in the Constitution, at least as it's been interpreted, and the Warren court interpreted it in the same way that generally the Constitution is a charter of negative liberties. It says what the states can't do to you, it says what the federal government can't do to you, but it doesn't say what the federal government or the state government must do on your behalf. And that hasn't shifted.

For the sake of our children and our future, we must do more to combat climate change.

It requires enormous energy for us to cut the African American uninsured rate by a third. A lot of scars.

We've endured too many tragedies. And each time I learn the news I react not as a President, but as anybody else would - as a parent.

That's the true genius of America: that America can change. Our union can be perfected. What we've already achieved gives us hope for what we can and must achieve tomorrow.

Nobody likes taxes. I would prefer that none of us had to pay taxes, including myself.