William Devane — American Actor born on September 05, 1940,

William Joseph Devane is an American film, television and theatre actor, perhaps best known for his role as Greg Sumner on the primetime soap opera Knots Landing and as James Heller on the serial drama 24. He is also known for his supporting roles in films such as McCabe & Mrs. Miller, Marathon Man, and Space Cowboys... (wikipedia)

It would have been nice for Greg to eventually grow into a mature relationship with Laura. He was moving toward that already but then took a turn into the juvenile with Paige.
When you go to a movie, it's about what's not being said. I tried to bring that to Greg Sumner. It was always about what's not being said.
I like working fast, but I got to the age where the real difference between television and the movies is, I'm not smart enough to be in the movies. It's a very political world. In all modesty, I can say that I'm a much better actor, but that doesn't matter.
I don't play polo anymore because I am too old. But we still have a half a dozen horses - a couple of young horses we are teaching how to play polo and older horses that are real trustworthy when you get them up in the mountains.
What I would have liked to do on that show was play a secretary of state who has huge personal business interests throughout the world. That, to me, seems to be more in synch with reality.