People of Berlin - people of the world - this is our moment. This is our time.

Hope is not blind optimism. It's not ignoring the enormity of the task ahead or the roadblocks that stand in our path. It's not sitting on the sidelines or shirking from a fight. Hope is that thing inside us that insists, despite all evidence to the contrary, that something better awaits us if we have the courage to reach for it, and to work for it, and to fight for it. Hope is the belief that destiny will not be written for us, but by us, by the men and women who are not content to settle for the world as it is, who have the courage to remake the world as it should be.

When I read history, I [see] what typically happens to presidents and the other party during tumultuous times and how people react when the economy is collapsing and they're losing their homes, losing their pensions - it sort of tracks, what ended up happening, because some of that is human nature.

I think [Obamacare] will survive. Or it may be called something else. And as I said I don't don't mind.

All across the world, ...increasingly dangerous weather patterns and devastating storms are abruptly putting an end to the long-running debate over whether or not climate change is real. Not only is it real, it's here, and its effects are giving rise to a frighteningly new global phenomenon: the man-made natural disaster.

On Easter I do reflect on the fact that as a Christian I am supposed to love, and I have to say that sometimes, when I've listened to less-than-loving expressions by Christians, I get concerned.

One of the things you learn as president is, as powerful as this office is, you have limited bandwidth. And the time goes by really quickly and you're constantly making choices, and there are pressures on you from all different directions - pressures on your attention, not just pressures from different constituencies. And so you have to be pretty focused about where can you have the biggest, quickest impact.