Our intelligence agencies will continue to gather information about the intentions of governments - as opposed to ordinary citizens - around the world, in the same way that the intelligence services of every other nation does. We will not apologize simply because our services may be more effective.

I think [ unpopular presidential candidates ] indicates, at least on the Democratic side, that we've got more work to do to strengthen our grassroots networks.

Above all, our freedom endures because of the men and women in uniform who defend it.

To break our addiction to oil is one of the greatest challenges that our generation will have to master.

A lot of countries have advanced capabilities. And given the vulnerabilities of our infrastructure and our economies to digital platforms, we have to be careful in making sure that this doesn't become a lawless, low-level battlefield.

Our journey is not complete until our gay brothers and sisters are treated like anyone else under the law.

Change doesn't come from Washington. Change comes to Washington