With their shared careers in comedy and three "Night at the Museum" films together, Robin Williams and Ben Stiller were clearly close.
As news of the beloved actor's death spread through Hollywood, Stiller took to Twitter to share his touching memories of Robin and condolences to the actor's family.
A tweet cannot begin to describe the hugeness of Robin Williams heart and soul and talent. This is so sad. #RobinWilliams
@RedHourBen
OK, I'll try. I met him when I was 13 and a huge fan and he was so kind and I watched him be kind to every fan i ever saw him with...
@RedHourBen
And with other actors he was so generous and brilliant. He made everyone feel special and equal around him even though he was the genius...
@RedHourBen
His heart was so big and even if you didn't know him, what he gave everyone was that same spirit in his work, so we all felt it…
@RedHourBen
His impact on the world was so positive. He did so much good for people. He made me and so many people laugh so hard for a very long time.
@RedHourBen
And because they don't really tweet, this message represents all the Stillers (Jerry, Anne and Amy) who Robin was a great friend to. xxxxx
@RedHourBen
Stiller and Williams still have "Night at the Museum: Secret of the Tomb" due out in December, with Robin reprising his role as Teddy Roosevelt for the third time. A trailer for the film was just released last week.
His films "Merry Friggin' Christmas" and "Absolutely Anything" will also get posthumous releases.