When we were doing 'The West Wing,' the hardest thing about doing 'The West Wing' was being compared to yourself. You go out there and want every episode to be as good as your best episode. I wrote 88 episodes of 'The West Wing,' and when you do that, one of them is going to be your 88th best, so your 88th best better be pretty good.

It's funny, the hardest thing to do is to make something look like it's fast, loose and improvised, and get somebody to laugh.

The hardest thing in the world, I now know, is to hold in your head that it is okay to think that you are right, but not to think so necessarily because everyone who disagrees with you is wrong or stupid or duped or bad.

I'm not an old, experienced hand at politics. But I am now seasoned enough to have learned that the hardest thing about any political campaign is how to win without proving that you are unworthy of winning.

The hardest thing about any political campaign is how to win without proving that you are unworthy of winning.

The hardest thing as an actor is that you work really hard constantly for these roles, and you invest so much in it. And when they don't come to fruition and nobody sees them, there's a part of you that dies a little bit. It's like, 'Ah! But I worked so hard!' But that's the business.

The hardest thing about being famous is that people are always nice to you. You're in a conversation and everybody's agreeing with what you're saying - even if you say something totally crazy. You need people who can tell you what you don't want to hear.

The hardest thing in the world to depict dramatically is stand-up.