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

The government of Libya announced the death of Moammar Gadhafi. This marks the end of a long and painful chapter for the people of Libya, who now have the opportunity to determine their own destiny in a new and democratic Libya. The Gadhafi regime ruled the Libyan people with an iron fist. The enormous potential of the Libyan people was held back and terror was used as a political weapon. The last major regime strongholds have fallen. The new government is consolidating the control over the country. And one of the world's longest-serving dictators is no more.

There's a whole generation coming up behind us that was engaged, inspired, worked for change during the course of my presidency, saw what was possible.

Estiven Rodriguez couldn't speak a word of English when he moved to New York City at age nine. But last month, thanks to the support of great teachers and an innovative tutoring program, he led a march of his classmates - through a crowd of cheering parents and neighbors - from their high school to the post office, where they mailed off their college applications. And this son of a factory worker just found out he's going to college this fall.

The ideas of ancient Greece helped inspire America's founding fathers as they reached for democracy. Our revolutionary ideas helped inspire Greeks as they sought their own freedom.

It took a lot of blood, sweat and tears to get to where we are today, but we have just begun. Today we begin in earnest the work of making sure that the world we leave our children is just a little bit better than the one we inhabit today.

If war explodes in Sudan, it could have a destabilizing effect that creates more space for terrorist activity that could eventually be directed at our homeland.