It's difficult to keep that perspective, I think, as a parent: to know your boundaries as to what's good parenting or just projecting your own expectations on your kids. That's the hardest.

I was always enjoying the moment. Acting, writing, looking for roles and getting involved with people and trying to create something that would be entertaining to people. With 'E.R.,' we were all very lucky to get this combination of people together in the right story in the right way to take it to the level it has reached.

I love being a part of something that is grassroots, and you can see the actual changes, the effect of what people do.

You know, you never say never because before I did 'ER,' I always said 'I'll never do a TV series,' so that's what I said.

There's really no point in having children if you're not going to be home enough to father them.

I just spent a lot of time on 'ER' for that eight years. I also started working when I was 16, so by the time I left 'ER,' I was 40 years old, I had this incredible experience, my wife had this great company, we had four kids, it was like, 'Let's go to New York and live for a while and make that the priority.'

It's difficult to keep that perspective, I think, as a parent: to know your boundaries as to what's good parenting or just projecting your own expectations on your kids. That's the hardest.