Rose: 'If you are an alien, how come you sound like you're from the north?' Doctor: 'Lots of planets have a north!

Always take a banana to a party.

If it’s time to go, remember what you’re leaving. Remember the best.

If you don't expect to like someone and then you do, that's an incredibly exciting moment.

The Doctor: Oh, now what's this, then? I love this. A big, flashy-lighty thing. That's what brought me here. Big, flashy-lighty things have got me written all over them. Not actually, but give me time... and a crayon.

Between the marriages, I shagged my way round television studios like a mechanical digger.

Madness is just what a genius looks like to a tiny mind.