Obviously I'm delighted I'm a grandfather, but I guess it takes a little while to digest. You start thinking, 'Oh, I'm half-way over the natural life span. So this is the last bit, and I'd better enjoy it.'

When you extend life span, that's really something. That's hard to do.

We do as much harm holding onto programs and people past their natural life span as we do when we employ massive organizational air strikes. However, destroying comes at the end of life's cycle, not as a first response.

In the early '90s, we discovered mutations that could double the normal life span of worms.

Fear is a very explosive emotion, but it has a short life span. It's the sprint. The marathon is hope.

“Each of us marks the span of our life by the things we do.” ~Tom Baker