Progress is the product of human agency. Things get better because we make them better. Things go wrong when we get too comfortable, when we fail to take risks or seize opportunities.

Change doesn't happen with people sitting on their behinds, getting lazy.

Focus on something that stirs your soul, it's hard to excel at anything that you don't love.

Governing is different than campaigning, and that comes with a whole different level of responsibility.

It is manifestly in the interest of the United States to deal with the very real threat that climate change poses. And that's why President Obama has worked so hard to reduce our own emissions and to lead internationally in forging the Paris climate agreement.

I have no regrets whatsoever that I have acted in a way to advance my country's interests

As Prime Minister Netanyahu and Defense Minister Barak have repeatedly said, the intelligence and security relationship between the United States and Israel at present is unprecedented. It has never been stronger.