LOS ANGELES (AP) — Gene Wilder, the frizzy-haired actor who brought his deft comedic touch to such unforgettable roles as the neurotic accountant in “The Producers” and the mad scientist of “Young Frankenstein,” has died. He was 83.

Wilder’s nephew said Monday that the actor and writer died late Sunday at his home in Stamford, Connecticut, from complications from Alzheimer’s disease.

Jordan Walker-Pearlman said in a statement that Wilder was diagnosed with the disease three years ago, but kept the condition private so as not to disappoint fans.

“He simply couldn’t bear the idea of one less smile in the world,” Walker-Pearlman said.

Wilder started his acting career on the stage, but millions knew him from his work in the movies, especially his collaborations with Mel Brooks on “The Producers,” ‘’Blazing Saddles” and “Young Frankenstein.” The last film – with Wilder playing a California-born descendant of the mad scientist, insisting that his name is pronounced “Frahn-kenshteen” – was co-written by Brooks and Wilder.

“Gene Wilder, one of the truly great talents of our time, is gone,” Brooks wrote in a statement Monday. “He blessed every film we did together with his special magic and he blessed my life with his friendship. He will be so missed.”

With his unkempt hair and big, buggy eyes, Wilder was a master at playing panicked characters caught up in schemes that only a madman such as Brooks could devise, whether reviving a monster in “Young Frankenstein” or bilking Broadway in “The Producers.” Brooks would call him “God’s perfect prey, the victim in all of us.”

But he also knew how to keep it cool as the boozing gunslinger in “Blazing Saddles” or the charming candy man in the children’s favorite “Willy Wonka and the Chocolate Factory.” His craziest role: the therapist having an affair with a sheep in Woody Allen’s “Everything You Wanted to Know About Sex.”

“The greatest comedic mind of my childhood is now gone,” actor Josh Gad wrote on Twitter. “#RIP #GeneWilder & thank you 4 your pure imagination. This one hits hard.”

Tweeted Jim Carrey: “Gene Wilder was one of the funniest and sweetest energies ever to take a human form. If there’s a heaven he has a Golden Ticket.”

Wilder was close friends with Richard Pryor and their contrasting personas – Wilder uptight, Pryor loose – were ideal for comedy. They co-starred in four films: “Silver Streak,” ‘’Stir Crazy,” ‘’See No Evil, Hear No Evil” and “Another You.” And they created several memorable scenes, particularly when Pryor provided Wilder with directions on how to “act black” as they tried to avoid police in “Silver Streak.”

But Wilder would insist in a 2013 interview that he was no comedian. He told interviewer Robert Osborne it was the biggest misconception about him.