DOCTOR: Hello. What are you doing here?

HERBERT: I've come to help. At least I can experience the adventure.

DOCTOR: I presume you heard what I said to Peri.

HERBERT: Oh, but she's a girl. This is work for men.

DOCTOR: Men? Men!

HERBERT: Men.

DOCTOR: Look, what I'm about to do is very dangerous. There's nothing particularly masculine about throwing your life away.

HERBERT: That's not what you said to Peri.

DOCTOR: I lied. And as I did it so badly, I'd have assumed even you would have realised.

HERBERT: I'm sorry. I simply didn't realise. I thought that

DOCTOR: You didn't think at all. That's half your problem. A characteristic you share with most of the people on your irritating planet.