Work hard and figure out how to be useful and don't try to imitate anybody else's success. Figure out how to do it for yourself with yourself.

Directing is too hard, it takes too much time, and it doesn't pay very well.

It doesn't matter to me whether I go back to outer space or not [while acting]. The job's the same and I don't have any sort of genre preferences. I'm looking for a good story and a good character, whether earthbound or not.

Nothing shocks me. I'm a scientist.

I had no expectation of the level of adulation that would come my way. I just wanted to make a living with a regular role in a television series.

I'm like old shoes, I've never been hip.

[On being an actor] .nothing more than a worker in a service occupation . It's like being a waiter or a gas station attendant, but I'm waiting on 6 million people in a week if I'm lucky.