Barack Obama: “I thank him for his many years of service and his statesmanlike conduct at this critical juncture.”

Because if this becomes the new normal, there’s no reason to believe it will stop with her — or that future presidents, in either party, won’t do the same.

I think when we act on that basis, it doesn't always work out, but over time things do get better.

It is a basic principle of American democracy that the government can’t selectively target individuals simply because of their political beliefs or what they say.

A drift towards extremism was "not inevitable