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.

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.

The very powerful and the very stupid have one thing in common. Instead of changing their views to fit the facts, they try to change the facts to fit their views.

Life is like the rungs on a ladder. The reason they are placed so close together is that we can learn to take baby steps and reach our destinations safely.

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!

I was cutting and threading pipe in the tunnels to get water into the shower rooms for athletics. I was repairing old metal windows, fixing cement walls where rain was coming through, and drying out the maple gym floors in hopes of removing the warping.

"Eureka" is Greek for "This bath is too hot."