“Hello, welcome to my mind! Sorry for the mess.”

DARWIN: I believe in descent through modification!

DOCTOR: Yes, Charles!

DARWIN: I believe in natural selection!

DOCTOR: Yes!

SILURIAN TULOK: It is no good, Doctor. You cannot fight me.

“Lay on, Macdalek!”

DOCTOR: It wouldn’t work as well with say, Elvis.

NYSSA: Who’s Elvis?

DOCTOR: I’ll explain later.