Nathan Lane, Williams' \"Bird Cage\" co-star, added similar sentiments about the late actor.

\"I feel I have to say something more than just 'heartbreaking and shocking' which everyone has said and I feel as well, but something a little more personal. Thus the following: One day in 1995 while riffing in the character of a snobby French toy store owner, Robin made me laugh so hard and so long that I cried,\" he said in a statement. \"It seemed to please him no end. Yesterday I cried again at the thought that he was gone.\"

He added, \"What I will always remember about Robin, perhaps even more than his comic genius, extraordinary talent, and astounding intellect, was his huge heart -- his tremendous kindness, generosity, and compassion as an acting partner, colleague, and fellow traveler in a difficult world. My heartfelt condolences to his wife and family.\"

His longtime friend, Whoopi Goldberg, tweeted, \"BillyCrystal is right ... There are No words.\"

BillyCrystal is right...There are No words

— Whoopi Goldberg (@WhoopiGoldberg) August 12, 2014

Glenn Close, his co-star in \"The World According to Garp,\" called Williams a friend, and more.

\"Robin was a world treasure,\" she wrote. \"As we mourn his tragic death, we must remember him for the great waves of laughter that he was able to [e]llicit from us, how his humor and insights -- though they came from a place of pain and uncertainty -- connected us and reminded us of how flawed and fragile ... how human we are ... how we are capable of moments of inspired transcendence and others of unspeakable despair.

\"Robin had it all,\" she wrote. \"I am so deeply thankful that this dearly loved man graced this particular planet.\"

Williams' daughter, Zelda, posted a quote by Antoine de Saint-Exupery, the French writer and poet.

\"You -- you alone will have the stars as no one else has them. ... In one of the stars I shall be living. In one of them I shall be laughing. And so it will be as if all the stars were laughing, when you look at the sky at night. ... You -- only you -- will have stars that can laugh,\" the quote read.

She added, \"I love you. I miss you. I'll try to keep looking up.\"

pic.twitter.com/UEtjQ1f2zS

— Zelda Williams (@zeldawilliams) August 12, 2014

President Obama issued a statement on the \"one of a kind\" actor.

Bill Clinton: \"He will be missed by so many.\"

Grateful for the life of Robin Williams, a true talent and a wonderful friend. He will be missed by so many.

— Bill Clinton (@billclinton) August 12, 2014

From Buzz Aldrin, via Facebook

\"I regarded Robin Williams as a friend and fellow sufferer. His passing is a great loss. The torment of depression and the complications of addiction that accompany it affect millions, including myself and family members before me - my grandfather committed suicide before I was born and my mother the year before I went to the moon - along with hundreds of veterans who come to a similar fate each year. As individuals and as a nation we need to be compassionate and supportive of all who suffer and give them the resources to face life. ?#?RobinWilliams RIP\"

Longtime friend Billy Crystal said he was shocked by the death.

No words.

— Billy Crystal (@BillyCrystal) August 12, 2014

English actress Minnie Driver, who famously played alongside Williams in \"Good Will Hunting,\" tweeted about her heartbreak.

My Heart's broken. Robin was a beautiful, kind soul. Can't bear that he's gone. So incredibly sorry for his family.

— Minnie Driver (@driverminnie) August 11, 2014

\"Sesame Street\" remembered Williams as the actor who always made others smile.

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

Mara Wilson, who played Williams’ onscreen daughter in “Mrs. Doubtfire,” wrote that she was “very sad, very upset.”

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

Comedian Ricky Gervais called Williams “a lovely man.”

I am deeply saddened. He was a lovely man who would keep everyone laughing even if he wasn't feeling good himself. RIP Robin Williams.

— Ricky Gervais (@rickygervais) August 12, 2014

Rep. Nancy Pelosi, D-California, reflected on Williams’ California roots.

The world has lost a great genius and San Francisco has lost a loyal friend. http://t.co/J2Bkr715Ne

— Nancy Pelosi (@NancyPelosi) August 12, 2014

Russell Crowe reflected on his humor.

Robin Williams...that 5 minute chat that evolved into 90 mins ,my sides were aching from laughter. Amazing mind , such a kind man .RIP

— Russell Crowe (@russellcrowe) August 12, 2014

Ron Howard, who watched the actor's career take flight with his Mork character, called him a \"force\" and a \"sweet soul.\"

We lost Robin...1st witnessed his genius as he created Mork B4 our eyes in 2 hrs on set. A Force. A Sweet Soul. A Brilliant Artist. RIP

— Ron Howard (@RealRonHoward) August 12, 2014

Fellow \"Happy Days\" star Henry Winkler was said he was thankful to witness Williams' brilliance.

Robin Williams was like no other ..To watch him create on the spot was a privilege to behold..Robin you are an angel now !!! REST IN PEACE

— Henry Winkler (@hwinkler4real) August 11, 2014

Neil Patrick Harris said he was shocked by the actor's death.

I am stunned and just reeling from the news of Robin Williams' death. He brought so much joy and heart to millions... Just, wow.

— Neil Patrick Harris (@ActuallyNPH) August 12, 2014

Michael J. Fox said he was saddened by the loss.

Famously kind, ferociously funny, a genius and a gentle soul. What a loss. #RobinWilliams

— Michael J. Fox (@realmikefox) August 12, 2014

Lady Gaga expressed hopes that the death would bring visibility and understanding to depression.

Rest in Peace+Laughter Robin Williams. Perhaps this tragedy will shed light on the seriousness of depression. You made us all so so happy.

— Lady Gaga (@ladygaga) August 12, 2014

Kevin Spacey called Williams a \"great man.\"

Robin Williams made the world laugh & think. I will remember & honor that. A great man, artist and friend. I will miss him beyond measure.

— Kevin Spacey (@KevinSpacey) August 12, 2014

Sarah Michelle Gellar starred alongside Williams in the sitcom \"The Crazy Ones.\"

pic.twitter.com/4Pyx4Kfuxe

— Sarah Michelle (@RealSMG) August 12, 2014

James Wolk, who also starred on \"The Crazy Ones,\" poste a photo and called Williams \"a guiding light, a role model, and an inspiration.\"

pic.twitter.com/JbZnlOpwPP

— James Wolk (@JamesWolk) August 12, 2014

Comedian Steve Martin tweeted about the loss of an old friend.

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

Ellen DeGeneres wrote about her disbelief.

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

Jimmy Kimmel remembered Williams as a sweet man.

Robin was as sweet a man as he was funny. If you're sad, please tell someone.

— Jimmy Kimmel (@jimmykimmel) August 11, 2014

Demi Lovato reflected on his movie successes.

Looking back at how much Robin Williams was a part of my childhood.. My heart is so sad.. ?? my prayers are with his friends and family..

— Demi Lovato (@ddlovato) August 12, 2014

The U.S. Air Force recounted Williams' role in \"Good Morning, Vietnam,\" in which he played an Armed Forces Radio DJ.

\"Gooood morning Vietnam! It's 0600 hours. What does the \"O\" stand for? O my God, it's early!\" #RobinWilliams as Airman Cronauer. #USAF #RIP

— U.S. Air Force (@usairforce) August 12, 2014

The Academy of Motion Pictures also reflected on Williams' death.

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

— The Academy (@TheAcademy) August 12, 2014

The Grammys expressed their gratitude.

Thank you, #RobinWilliams. http://t.co/1u2XFcNkff #RIP pic.twitter.com/E0qRiuMwir

— The GRAMMYs (@TheGRAMMYs) August 12, 2014

Sarah Silverman called Williams \"pure love.\"

Oh no this is terrible. #RIPRobinWilliamsBy all accounts he was pure love

— Sarah Silverman (@SarahKSilverman) August 11, 2014

Mia Farrow tweeted in disbelief.

No! Robin Williams you were so loved.

— mia farrow (@MiaFarrow) August 11, 2014

Kathy Griffin shared a photo of herself and the revered actor.

I met this sweet, generous & brilliant man Robin Williams in 1991. Here we are with HIS idol Jonathan Winters. #RIP pic.twitter.com/ZI4QV5QyuL

— Kathy Griffin (@kathygriffin) August 11, 2014

Joel McHale called Williams his hero.

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

Comedy video website Funny or Die remembered Williams.

The world has lost a tremendously funny and talented human. Today is a sad day. RIP Robin Williams pic.twitter.com/Fromo2EK93

— Funny Or Die (@funnyordie) August 11, 2014

Comedian Michael Ian Black shared his condolences for the Williams family.

The Robin Williams news is devastating. I feel sick.

— Michael Ian Black (@michaelianblack) August 11, 2014

\"GMA's\" Michael Strahan shared his grief.

RIP Robin Williams. One of my favorites. Damn sad!

— Michael Strahan (@michaelstrahan) August 12, 2014

Tim Allen tweeted his sadness.

So sad so very sad about Robin. My head and heart extend to his family.

— Tim Allen (@ofctimallen) August 11, 2014

Bob Saget tweeted his wish that Williams find peace.

His heart was as big as his genius. So sad. Rest in Peace Robin Williams.

— bob saget (@bobsaget) August 11, 2014

Musician and Roots member Questlove reflected on how inspiring the revered actor was to him.

Man. The smallest gesture can mean the world to you. Robin Williams made such an impact on me and… http://t.co/ME0rY2rcvn

— Questlove Gomez (@questlove) August 12, 2014

Rihanna shared her heartbreak to more than 36 million followers.

Heartbreaking news about the late Robin Williams. May his soul now be at peace!

— Rihanna (@rihanna) August 12, 2014

Kelly Clarkson said she was saddened by the news of Williams' passing.

Devastating finding out about @robinwilliams today. He was an amazing talent and incredibly sweet. So sad.

— Kelly Clarkson (@kelly_clarkson) August 11, 2014
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