The honorary Academy Award winner died Wednesday, his son, actor Michael Douglas, said in an Instagram post.
“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,” Douglas wrote.

Douglas walked away from a helicopter crash in 1991 and suffered a severe stroke in 1996 but, ever the battler, he refused to give in. With a passionate will to survive, he was the last man standing of all the great stars of another time.

Nominated three times for best actor by the Academy of Motion Picture Arts and Sciences — for Champion (1949), The Bad and the Beautiful (1952) and Lust for Life (1956) — Douglas was the recipient of an honorary Oscar in 1996. Arguably the top male star of the post-World War II era, he acted in more than 80 movies before retiring from films in 2004.

“Kirk retained his movie star charisma right to the end of his wonderful life, and I’m honored to have been a small part of his last 45 years,” Steven Spielberg said in a statement. “I will miss his handwritten notes, letters and fatherly advice, and his wisdom and courage — even beyond such a breathtaking body of work — are enough to inspire me for the rest of mine.”