"Oh yes, I can [remember my family] when I want to. And that's the point, really. I have to really want to, to bring them back in front of my eyes. The rest of the time they.. sleep in my mind and I forget. And so will you. Oh yes, you will. You'll find there's so much else to think about. To remember. Our lives are different to anybody else's. That's the exciting thing, that nobody in the universe can do what we're doing."
- The Doctor, The Tomb of the Cybermen
Written by Kit Pedler and Gerry Davis