I didn’t know old people. I never knew any grandparent. But one thing that is different about me, I always had a pressing worry about the passage of time. When I was in sixth grade I made a speech to the class, and said: “Okay, we’re 11 now. If you looked at all of our genetics, probably we all have about 70 years to live. That’s all we’ve got. We’ve got to become doctors. We’ve got to help people. We’ve got to learn languages. We’ve got to travel the world, help the poor. We have to be the best we can be.” I’ve had this sense, all the time, that the clock is ticking, and as you get older it seems to tick faster. It’s not that I’ve always thought aging is going to be graceful or peaceful or wise. I just know that every minute, no matter what age you are, is fleeting. I just want to grab on to all of it.