"Nothing pleases me more than knowing that I have lived the best life possible", he wrote. "He was my guiding light", Reiner's actor-filmmaker son Rob Reiner tweeted.
Tributes are flooding in for the late Carl Reiner, who has died at the age of 98 due to natural causes.
Reiner's career spanned many decades and saw the legend try his hand at nearly every entertainment medium including theatre, television, film, and audio recordings.
In his early years Reiner worked with comedy legends such as Syd Caesar and Mel Brooks, a close friend.
He was still taking voice roles in his 90s and had a key role in "If You're Not in the Obit, Eat Breakfast", a documentary about people who keep busy into their 90s. Rob Reiner also starred in All in the Family, The Wolf of Wall Street, Sleepless in Seattle and New Girl.
Shatner's Star Trek co-star George Takei posted, "Thanks for the near-century of your life and gifts, Carl Reiner".
He performed that sketch with fellow comedy legend Mel Brooks. "Carl Reiner was a comedy genius".
Reiner was born March 20, 1922, in the Bronx and was working in a factory repairing sewing machines when his brother saw an ad in the New York Daily News promoting a free acting workshop.
"Carl was a giant, unmatched in his contributions to entertainment", Brooks said in a tweet. In a statement obtained by the Hollywood Reporter, Brooks also shared that Carl and him have been "best friends" since 1950 and shared many great moments together. In the 1990s, he reprised the Alan Brady character for an episode of Mad About You.
Reiner turned a novel he wrote, "Enter Laughing" into a Broadway play, and the first of many movies he would direct.
While in 2000's, he appeared in the Ocean film series as an elderly con man. He recounted his childhood and creative journey in the 2013 book, I Remember Me.
But Reiner never strayed far from television, continuing to make guest appearances on various shows such as "Two and a Half Men" and "Hot in Cleveland" well into his 90s, as well as keeping up a busy Twitter account.