What a difference a decade or so makes.  Colin Farrell was a hell-raiser back in his twenties and thirties who loved to party and carouse in no particular order.

Now he’s 41 and sober, and definitely using his celebrity for the greater good. Colin has been a mighty advocate and fundraiser on behalf of groups working for a cure for Angelman Syndrome, a rare neuro-genetic disorder that his eldest son James, now 14, was born with.

Last month Colin was the star attraction at a gala in Chicago hosted by FAST, the Foundation for Angelman Syndrome Therapeutics, which raised $4.1 million for research – more than triple the amount raised in 2016.  He spoke at the gala and has never failed to support its goals.

“The future for all of our children is at a crossroad,” Colin said. “A cure is coming, and this is legendary.”

Read more: Colin Farrell’s favorite role? Being a Dad

🎥 Colin Farrell sends the Foundation for Angelman Syndrome Therapeutics (FAST) a personal video message for International Angelman Day (February 15) pic.twitter.com/m9s6Lqy8FK

— Colin Farrell Daily (@DailyFarrell) December 22, 2017

Farrell gave an interview to Today.com in which he further elaborated about his son and his hopes for the future.

“I would humbly say to parents of a child with a recent diagnosis of any disorder that while they may well be experiencing the death of one dream, that dream of having a healthy child, there are a thousand dreams and milestones that are yet to reveal themselves," he said.

Read more: Colin Farrell has no time for Irish Americans who drink green beer on Paddy's Day

It's so easy to appreciate Colin Farrell, isn't it? • Foundation for Angelman Syndrome Therapeutics - Gala • Chicago Dec 2nd 2017 • Pictures (c) FAST pic.twitter.com/ifiKeIvsuF

— Colin Farrell ⍟ GER (@CFarrellGermany) January 3, 2018

"I would also say that my heart is with you all, along with my respect for you, for your children’s struggles and for the love that you have for your children and that I wish you all peace and support in the face of any adversities.”

Wise words from a man who definitely has his priorities in proper order.

Irish actor Colin Farrell is a long way away from his days as a hell-raiser. RTÉ