Michael J. Foxjokes about what it’s like to be an empty nester since he and wife Tracy Pollan’s youngest daughter Esme, 19, went off to college at the celebration of 20 years of theMichael J. Fox Foundationevent in the Jazz at Lincoln Center in New York on Saturday night.

“We get more food,” Fox tells PEOPLE exclusively.

The Emmy-winning actor tied the knot with Pollan in 1988 and also share son Sam, 32, and twin daughters Aquinnah and Schuyler, 26. Pollan jokes with PEOPLE about thecouple’s four kids not being thereto eat all of the family food, “They’re not taking it all.”

Michael J. Fox and Tracy Pollan.Noam Galai/Getty

Michael J. Fox (L) and Tracy Pollan attend the 2021 A Funny Thing Happened On The Way To Cure Parkinson’s gala on October 23, 2021 in New York City.

Noam Galai/Getty

Tracy Pollan (L) and Michael J. Fox speak onstage during the 2021 A Funny Thing Happened On The Way To Cure Parkinson’s gala on October 23, 2021 in New York City.

Fox also jokes about his spouse getting onstage during the event, “Tracy is going to jam with Brad Paisley,” before Pollan clarifies her role, “I’m going to dance, I don’t play or sing.”

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The foundation has raised over $1 billion to date for Parkinson’s research, but Fox insists there is still more work to be done: “With the billion dollars in research that we funded, it’s great, we’re doing more things but we’re not done yet.”

What is the secret to the longtime couple’s marriage? Fox reveals, “Like each other,” and Pollan shares, “We enjoy each other’s company and we just have fun together and so it’s not that hard for us, we’re lucky.”

source: people.com