The American dream is not a sprint or even a marathon but a relay.

You can't be pro-business unless you're pro education.

My grandmother didn't live to see us begin our lives in public service. But she probably would have thought it extraordinary that just two generations after she arrived in San Antonio, one grandson would be the mayor and the other would be on his way - the good people of San Antonio willing- to the United States Congress.

Donald Trump is just unfit, unprepared, just doesn't get it, shouldn't be the commander in chief of America.

I especially cannot imagine anyone who grew up during the Cold War era listening to Donald Trump and saying, you know what, that's a guy that I want to support. It makes zero sense.

It's going to be difficult for [Donald] Trump to overcome the deep first impression that he gave to the Latino community with his comments right out of the gate about Mexican immigrants, with his comments about Judge Curiel.

Donald Trump ought to realise that being a president is different to being a candidate and that there is a responsibility that comes with the office.