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

It is my firm belief that it will be in the interests of the United States, especially our economic interests, to pursue comprehensive immigration reform.

It is moments like these that force us to try harder, and dig deeper, and to discover gifts we never knew we had - to find the greatness that lies within each of us.

Jerusalem will remain the capital of Israel and it must remain undivided."Truth: Obama later said, "This was an example where we had some poor phrasing in the speech and we immediately tried to correct the interpretation that was given. The point we were simply making was, is that we don't want barbed wire running through Jerusalem.

If you were president 50 years ago, the tragedy in Syria might not even penetrate what the American people were thinking about on a day to day basis. Today, they're seeing vivid images of a child in the aftermath of a bombing.

The more we can encourage entrepreneurship, particularly for young people, the more they have hope. That requires some reforms in these [African] governments: rooting out corruption, increased transparency and how government operates, making sure that regulations are not designed just to advantage elites, but are allowing people who have a good idea to get out there and get things done.

For decades, we've been told that it doesn't make economic sense to switch to renewable energy. Today, that's no longer true.