LEELA: I often wonder how my life would have turned out if he had not come.

ROMANA: Who?

LEELA: The Doctor, of course. All of time and space to voyage but he came to my world at that exact moment. If he had come to us a century before my time or after it. Perhaps he would have taken someone else.

ROMANA: But he didn’t. He took you.

LEELA: But if he had not. Perhaps I would have become old. One of the elders of my tribe. Or… or perhaps I would have remained banished and died alone in some forgotten cave. Anyways, I would have passed long ago and I would have seen so little. Experienced so little.