If it takes you 20 or 25 years to establish yourself in one field, you really ought to be careful not to stray too far.
Then I got the offer to play Buck Rogers, but I turned it down thinking it was a cartoon character. Well I was wrong, it wasn't at all. So I read the script and decided I liked the character, it had a good concept.
People see me now and ask if I'm still running. I may look like I am, but I'm really not. People think I still run every day but I ran for 25 years and I deserve to not do anything but walk or ride the bike with my kids.