And let me offer lesson number one about America: All great change in America begins at the dinner table. So, tomorrow night in the kitchen I hope the talking begins. And children, if your parents haven't been teaching you what it means to be an American, let 'em know and nail 'em on it. That would be a very American thing to do.

In the course of history, there comes a time when humanity is called to shift to a new level of consciousness, to reach a higher moral ground. A time when we have to shed our fear and give hope to each other. That time is now.

We cannot afford to be color blind. We have to be color brave. We have to be willing, as teachers and parents and entrepreneurs and scientists, we have to be willing to have proactive conversations about race with honesty and understanding and courage, not because it's the right thing to do, but because it's the smart thing to do, because our businesses and our products and our science, our research, all of that will be better with greater diversity.

Do not despair of our present difficulties but believe always in the promise and greatness of America, because nothing is inevitable here. Americans never quit. We never surrender. We never hide from history. We make history.

The Berlin Wall limited my opportunities. It quite literally stood in my way. However, there was one thing which this wall couldn't do through all those years: It couldn't impose limits on my inner thoughts, my personality, my imagination, my dreams and desires.