"The Declaration of Independence was always our vision of who we wanted to be, our ideal of freedom and justice, how we were going to be different, and what the American experiment was going to be about."

"So much of the deep lingering sadness over President Kennedy's assassination is about the unfinished promise: unspoken speeches, unfulfilled hopes, the wondering about what might have been."

"A lot of people are waiting for Martin Luther King or Mahatma Gandhi to come back - but they are gone. We are it. It is up to us. It is up to you."

"Remember and help America remember that the fellowship of human beings is more important than the fellowship of race and class and gender in a democratic society."

"Go for it now. The future is promised to no one."

"It's time to debate images, especially when someone's going to prison for downloading them."

"General intelligence in machines will a profound challenge to our understanding of consciousness, so we must tread carefully into the future."

"Treat your kid like a darling for the first five years. For the next five years, scold them. By the time they turn sixteen, treat them like a friend. Your grown up children are your best friends."