The absence of hope can rot a society from within.

Iran will for sure have pledged to the international community that it will not develop a nuclear weapon, and now will be subject to an additional protocol, a more vigorous inspection and monitoring regime that lasts in perpetuity.

My task over the last two years hasn't just been to stop the bleeding. My task has also been to try to figure out how do we address some of the structural problems in the economy that have prevented more Googles from being created.

I was raised by a single mom who had to put herself through school while looking after two kids. And she worked hard every day and made a lot of sacrifices to make sure we got everything we needed. My grandmother, she started off as a secretary in a bank. She never got a college education, even though she was smart as a whip. And she worked her way up to become a vice president of a local bank, but she hit the glass ceiling. She trained people who would end up becoming her bosses during the course of her career.

Now, because he knows that his economic theories don't work, he's been spending these last few days calling me every name in the book. Lately he's called me a socialist for wanting to roll-back the Bush tax cuts for the wealthiest Americans so we can finally give tax relief to the middle class. I don't know what's next. By the end of the week he'll be accusing me of being a secret communist because I shared my toys in kindergarten. I shared my peanut butter and jelly sandwich.

The United States was proud to stand with the people of Germany as this nation and this continent reunited and rebuilt and reached for a better future.

That is the true genius of America, a faith in the simple dreams of its people, the insistence on small miracles. That we can say what we think, write what we think, without hearing a sudden knock on the door. That we can have an idea and start our own business without paying a bribe or hearing a sudden knock on the door. That we can participate in the political process without fear of retribution, and that our votes will be counted.