If we are going to reset or whatever might happen, words count when you are dealing diplomatically in negotiations.

I agree that we need to take aggressive action. I agree that we need to ensure that we move forward in a sustainable, rational manner.

So far, our generation has failed to adequately address our climate crisis. This failure is not fatal, yet our failure to change will be.

Climate change is undoubtedly an economic threat--that is true; a national security threat--that is true; and, ultimately, and most importantly, an existential threat.

For every ton of carbon dioxide reduced by the United States, China adds nearly four times as much.

The last thing we would want for the generations to follow... is to hear in some of your remarks actual fear and anxiety being expressed.

There must be leadership in addressing climate change because we, and especially your generation, cannot afford for things not to change.

America knows how to lead in a crisis, and it is high time we pick ourselves up and get back to this fight.

If left unabated, climate change will displace world populations.

As Mr. Kinzinger said a few minutes ago, contrary to popular belief, the United States--the United States--is the country that has led the world in greenhouse gas reductions.

It makes a difference. It will make a difference, and, by the way, it is bipartisan and based on science.

If we do not take the threat of climate change seriously, our children and grandchildren will never forgive us for failing to meet the moral demand of our time.