Celebrities React To The Tragic Death Of Robin Williams

News of award-winning actor and comedian Robin Williams' death has been met with an outpouring of grief online.

Celebrities and colleagues who worked alongside Williams have shared memories and tributes to the actor on social media, noting his incredible talent and warm heart.

Here's a collection of reactions:

When I was 18 I got a job as an intern at Comic Relief just to be near him. A genius and a truly kind man who made the world a better place.

- Judd Apatow (@JuddApatow) August 12, 2014

I could not be more stunned by the loss of Robin Williams, mensch, great talent, acting partner, genuine soul.

- Steve Martin (@SteveMartinToGo) August 11, 2014

Robin Williams made the world a little bit better. RIP.

- Steve Carell (@SteveCarell) August 11, 2014

Heartbroken for Robin Williams and his family.

- Taylor Swift (@taylorswift13) August 12, 2014

Genie, you're free. pic.twitter.com/WjA9QuuldD

- The Academy (@TheAcademy) August 12, 2014

Mork from Ork: Rare evidence that aliens can be smart, clever, articulate & funny. Robin Williams, RIP

- Neil deGrasse Tyson (@neiltyson) August 11, 2014

New marquis at @thelaughfactory. #RobinWilliams #RestInPeace Make God Laugh. @ABC7 #mapit pic.twitter.com/IkmRrOMCFW

- Elex Michaelson (@ABC7Elex) August 12, 2014

Robin Williams could not have been kinder or more generous when I worked with him in Flubber. My heart goes out to his family.

- Wil Wheaton (@wilw) August 11, 2014

Mr. Williams visited me the first day of filming The Parent Trap. I will never forget his kindness. What an enormous loss. My condolences.

- Lindsay Lohan (@lindsaylohan) August 11, 2014

I can't believe the news about Robin Williams. He gave so much to so many people. I'm heartbroken.

- Ellen DeGeneres (@TheEllenShow) August 11, 2014

Very sad, very upset, very glad I did not have to hear about this though Twitter. Probably going to be taking some time off it for a while.

- Mara Wilson (@MaraWritesStuff) August 11, 2014

RIP @robinwilliams You were one of the very best that ever was. You were one of my heroes. #RobinWilliams

- Joel McHale (@joelmchale) August 11, 2014

7 years old w/ a single mom the first time I saw #MrsDoubtfire. Made me feel better about being from an unconventional family. Love is love.

- Emmy Rossum (@emmyrossum) August 11, 2014

We mourn the loss of our friend Robin Williams, who always made us laugh and smile. pic.twitter.com/UOY8LTjVRA

- Sesame Street (@sesamestreet) August 11, 2014

Robin Williams' Hollywood Walk of Fame star right now. (via @MATTYMOON88) pic.twitter.com/2LL4WMQkSy

- Connor Ryan (@connortryan) August 12, 2014

Williams was found dead in his home Monday of an apparent suicide.

He was known for his work in films both comedic and dramatic, and he won an Oscar for Best Supporting Actor for his role in "Good Will Hunting."