Keepers of light carry invisible candles of hope, touching hearts and illuminating the souls of friends.

Being Doctor Who, I used to look at the clock and know at half past four we were going to stop rehearsing - and that was a sad moment for me because I wanted to stay in this beautiful, unreal world.

Lis Sladen was very important to me, you know. When I joined the little world of 'Doctor Who', Lis was already a star.

Not only don't I know who I am, but I'm very suspicious of people who do know who they are. I am sometimes ten or twelve people a day, and sometimes four or five people an hour!

Strive to have sunshine in our hearts each day. It will greatly improve our outlook.

I think people can believe in anything.

I never read the scripts at all carefully and never wanted to know what was going on, because i felt that being a benevolent alien, that's the way it should be.