So, let us summon a new spirit of patriotism, of responsibility, where each of us resolves to pitch in and work harder and look over not only ourselves, but each other.

Those who are already feeling the effects of climate change don't have time to deny it - they're busy dealing with it.

I stand here today humbled by the task before us, grateful for the trust you have bestowed, mindful of the sacrifices borne by our ancestors.

Michelle and I don't want anyone telling us who our family's doctor should be - and no one should decide that for you either. Under our proposals, if you like your doctor, you keep your doctor. If you like your current insurance, you keep that insurance. Period, end of story.

First of all, I think everybody has to acknowledge don't underestimate the guy [Donald Trump], because he's going to be 45th president of the United States.

The science [of global warming] is beyond dispute... Delay is no longer an option. Denial is no longer an acceptable response

It took a lot of blood, sweat and tears to get to where we are today, but we have just begun. Today we begin in earnest the work of making sure that the world we leave our children is just a little bit better than the one we inhabit today.