Michael Douglas Pens Poignant Tribute To His Father, Kirk Douglas, After His Death At Age 103

Kirk Douglas, the leading actor of many golden age films including Spartacus and Lonely Are the Brave, passed away yesterday at the age of 103.

He starred in more than 90 films during his 60-year acting career.

Fans and celebrities alike are mourning the loss of the golden age actor, sharing their favorite moments and memories from his life and work.

Many fans have taken to Twitter to celebrate the actor in light of his passing, and celebrities are showing their support.

Making the day even more special, Kirk Douglas's son, Michael Douglas, posted a touching tribute over on Instagram, which is making his fellow celebrities and fans emotional.

Michael Douglas posted:

"It is with tremendous sadness that my brothers and I announce that Kirk Douglas left us today at the age of 103. To the world he was a legend, an actor from the golden age of movies who lived well into his golden years, a humanitarian whose commitment to justice and the causes he believed in set a standard for all of us to aspire to."

"But to me and my brothers Joel and Peter he was simply Dad, to Catherine, a wonderful father-in-law, to his grandchildren and great grandchild their loving grandfather, and to his wife Anne, a wonderful husband."

"Kirk's life was well lived, and he leaves a legacy in film that will endure for generations to come, and a history as a renowned philanthropist who worked to aid the public and bring peace to the planet."

"Let me end with the words I told him on his last birthday and which will always remain true. Dad- I love you so much and I am so proud to be your son."

In response to his loving tribute, multiple actors and TV personalities chimed in with their support.

Catherine Zeta Jones of course responded to her husband's heartfelt tribute:

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Daymond John, "the people's Shark" from Shark Tank, expressed his condolences:

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Actress Sarah Baker chimed in:

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Actress Kali Hawk sent her love:

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Like so many of us, comedian Tony Baker was completely blown away by the news:

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Actress Sela Ward also sent her love and condolences to the family:

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Not to mention, countless adoring fans also commented in their mourning.

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@michaelkirkdouglas / Instagram

Every time we lose a celebrity, there will always be those who mourn. But it's especially emotional when the lost celebrity is a force like Kirk Douglas, who may well be the very last of the stars from the golden age of film. Douglas—born in New York city in 1916 as Issur Danielovitch—lived out an acting career most only aspire to.

Rest In Peace, Mr. Douglas.