The Kardashians, Ellen, Miley Cyrus and other stars also expressed their condolences
Barack Obama has issued a touching tribute to Robin Williams, who was found dead aged 63, from an apparent suicide in his home, on Monday night.
In a statement released by the White House, the President praises the Oscar winning actor's versatility, as well as noting the huge impact the actor made on many.

The President made a touching tribute to the star (AKM-GSI)
"Robin Williams was an airman, a doctor, a genie, a nanny, a president, a professor, a bangarang Peter Pan and everything in between. But he was one of a kind. He arrived in our lives as an alien - but he ended up touching every element of the human spirit.
BREAKING NEWS: Robin Williams Dead At Age 63 From Possible Suicide
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"He made us laugh. He made us cry. He gave his immeasurable talent freely and generously to those who needed it most - from our troops stationed abroad to the marginalized on our own streets. The Obama family offers our condolences to Robin's family, his friends, and everyone who found their voice and their verse thanks to Robin Williams."

RIP Robin Williams 1951-2014 (Instagram/Robin Williams)
A host of celebrities also took to Twitter to remember the star, with fellow funnyman, Steve Martin expressing his shock.
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 was also stunned.
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
Sarah Michelle Gellar shared a sweet picture montage of the pair.
pic.twitter.com/4Pyx4Kfuxe
— Sarah Michelle (@RealSMG) August 12, 2014
Jared Leto thanked the star.
Thank you to the beautifully original + brave artist that is #RobinWilliams. You taught us how to stand on the edge, fearless, + shine.
— JARED LETO (@JaredLeto) August 11, 2014
Sharon Osbourne revealed the impact it had made on her family.
The entire Osbourne Family is grieving the loss of a kind, funny, generous and talented man, Robin Williams.
— Sharon Osbourne (@MrsSOsbourne) August 11, 2014
Khloe Kardashian prayed for his family.
Heart broken!!! #RIP Robin Williams!! Praying for your family on such a sad day. You've given so much joy to so many. Devastating we lost u
— Khloé (@khloekardashian) August 11, 2014
Sarah Hyland referred to his great family films.
I can't handle this today. I will forever remember this moment as losing my childhood. Robin Williams was my hero and idol growing up. RIP.
— Sarah Hyland (@Sarah_Hyland) August 11, 2014
Miley Cyrus was particularly affected by the news.
I can't take the Robin Williams news. I've never cried over someone I've never met but I can't stop 😿😿😿😿
— Miley Ray Cyrus (@MileyCyrus) August 11, 2014
Steve Carrell talked about the star's great impact.
Robin Williams made the world a little bit better. RIP.
— Steve Carell (@SteveCarell) August 11, 2014
Lindsay Lohan revealed the pair had met.
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
Lena Dunham also went on to stress the importance of discussing mental health.
Just shared a moment of silence on the set for Robin Williams, a man who brought so much laughter, joy and healing to so many.
— Lena Dunham (@lenadunham) August 12, 2014
Kevin Spacey remembered his friend.
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
Mindy Kaling revealed a little known fact.
I am named after a character from a Robin Williams TV show when my parents still lived in Africa. He meant so much, to so many, so far away.
— Mindy Kaling (@mindykaling) August 12, 2014
And Robin's daughter, Zelda Williams, also expressed her grief on Twitter
pic.twitter.com/UEtjQ1f2zS
— Zelda Williams (@zeldawilliams) August 12, 2014