I don't think I underestimated [Vladimir Putin], but I think that I underestimated the degree to which, in this new information age, it is possible for misinformation for cyber hacking and so forth to have an impact on our open societies, our open systems, to insinuate themselves into our democratic practices in ways that I think are accelerating.

You can't entirely compare between the United States and Greece for a range of reasons, not just because of the size of the economy.

The flame of the diya, or lamp, reminds us that light will ultimately triumph over darkness.

Ensuring that the US continues to lead the world in science and technology will be a central priority for my administration.

Reflecting on his years in prison, Nelson Mandela wrote that there were dark moments that tested his faith in humanity, but he refused to give up.

I think it's true that we shouldn't apply a strict litmus test and the most important thing in any judge is their capacity to provide fairness and justice to the American people.

Politics in this country [USA] is always tough. It's always contentious, because this is a big country and a diverse country, and people have strong points of view, and we've got a great diversity of interests.