Sustaining the energy and focus involved in doing a good job I think starts to gets tougher the longer you do it.

I think that Canada is one of the most impressive countries in the world, the way it has managed a diverse population, a migrant economy. The natural beauty of Canada is extraordinary. Obviously there is enormous kinship between the United States and Canada, and the ties that bind our two countries together are things that are very important to us.

It would be naive of me to suggest that with Russia committed militarily, as it is, to supporting what in many cases are barbarous tactics by the Assad regime to crush the opposition.

Every life must be given the chance to realize its full potential - that every life matters.

Democracy is hard work.

[Michelle Obama] used to say to our friends, "Barack's exactly the kind of guy I want to be president. I just wish he didn't want to do it when I was married to him."

Black children, white children, Latino children. America is becoming more diverse, it's becoming more tolerant as a consequence there's more interactions between groups. There are going be tensions that arise.