Liev Schreiber Is "Spiritually Younger" Thanks To Kids

Dad-of-two Liev Schreiber says that being a father - a job he has called "the best thing that ever happened to you and the hardest work you’ll ever do" - helps to keep him young.

"I feel much older," the 42-year-old Wolverine star admits to People. "I'm older physically, but spiritually much younger."

The proud papa couldn't help but share a particularly precious development about his 2-year-old son Sasha.

"Sasha has learned how to say 'I love you,' Liev reports. "It's unrecognizable but he does say it. Rhythmically he can kind of sound it out. It kind of sounds like 'Iwoveu,' which is very exciting."

So sweet! That's one milestone that is sure to melt a parent's heart.

Liev and his partner Naomi Watts are also parents to 7-month-old son Kai.