It's not enough to have good thoughts for the world. You must get out there! It is also really important that each person realise their own worth. If you don't think you're good enough, how can you turn around and help save the world?

I don't get a sense that Cheers is revered the way it should be by [younger viewers]. In my mind, it's a show that should always, always, always be in the pantheon. But can it ever mean to future generations what it meant to us?

I had trouble hanging around [Shelley Long] until we stood onstage together, and then I was in heaven.

You have to work with the auto industry, the oil companies, you have to work to develop renewable fuel, whether it's solar or different kinds of fuel.

At the time, my 6-year-old kept thinking my character's name was "Sam Alone," which is kind of brilliant. The funny came out of Sam's sad core: the alcoholic, the sex addict, the person who thinks he's God's gift.

To the naked eye, our oceans are beautiful. But scientists tell us that all of the world's fisheries will collapse by 2048, unless we change how we manage them. Help protect our oceans so the next generation can also enjoy their bounty.

My job playing Sam Malone was to let the audience in, to love my bar full of people. And that informed my life. I mean, we're so different [in the cast], some of us. Miles apart. [But] when I see anyone from those days, I tap into that instant love for them.