The only time I get frustrated with activist criticism is if I have recognized them, and invited them to work with me to figure out how we solve this problem that they're concerned about, and either they don't engage out of the sense of purity - "I'm not going to shake his hand" - or you're not sufficiently prepared so you don't even know what to ask for, or you're not being strategic as an activist and trying to figure out how the process has to work in order for you to get what you want.

My main message is to the parents of Trayvon Martin. You know, if I had a son, he'd look like Trayvon.

On this day, we gather because we have chosen hope over fear, unity of purpose over conflict and discord.

Ultimately, only diplomacy can bring about a durable solution to the challenge posed by Iran's nuclear program. As President and Commander in Chief, I will do what is necessary to prevent Iran from obtaining a nuclear weapon. However, I have a profound responsibility to try to resolve our differences peacefully, rather than rush towards conflict.

I think I have an ongoing conversation with God. I think throughout the day, I'm constantly asking myself questions about what I'm doing, why am I doing it.

Here at this site, Solyndra expects to make enough solar panels each year to generate 500 megawatts of electricity. And over the lifetime of this expanded facility, that could be like replacing as many as eight coal-fired power plants.

That's what building a body of work is all about. It's about the daily labor, the many individual acts, the choices large and small that add up over time, over a lifetime to a lasting legacy. It's about not being satisfied with the latest achievement, the latest gold star, because the one thing I know about a body of work is that it's never finished. It's cumulative. It deepens and expands with each day you give your best. You may have setbacks and you may have failures, but you're not done.