Whenever the lion fish in the fish tank in the captain's ready room died it was always a sad moment.

I've often reflected on this in the past weeks as I've been following the presidential campaign: Very often, I thought it would have been great for both of these guys to sit down and be force-fed a couple of dozen episodes of Star Trek.

For seven years I did very little theatre, and I have to make up some time.

As time went on, I did campaign to lighten the character a little bit, to introduce some romance into the episodes, outside activities, horse riding and fencing and mountaineering.

One day, out of irritation, I said, you know all of those years with the Royal Shakespeare Company, all those years of playing kings and princes and speaking black verse, and bestriding the landscape of England was nothing but a preparation for sitting in the captain's chair of the Enterprise.

The knights of the theater represented to me not only the pinnacle of the profession but the esteem in which the profession was held. To find myself, to my astonishment, in that company is the grandest thing that has professionally happened to me.

I made a promise to myself that I would try to introduce something unexpected in every single episode of the series. It was largely to amuse myself as much as anything. I didn't ever want the audience to feel that they knew everything.