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.

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.

Why is it that countries which we call strong are so powerful in creating wars but are so weak in bringing peace? Why is it that giving guns is so easy but giving books is so hard? Why is it, why is it that making tanks is so easy, but building schools is so hard?

The first principle is that you must not fool yourself—and you are the easiest person to fool. So you have to be very careful about that. After you've not fooled yourself, it's easy not to fool other scientists. You just have to be honest in a conventional way after that.

When another baby arrived, I realized that the problem could not be solved in the operating room, but that we had to combat the root causes of these atrocities. I decided to travel to the village of Kavumu to talk to the men: why don't you protect your babies, your daughters, your wives? And where are the authorities?