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Robin Williams was found dead of apparent suicide at his Tiburon, California home on August 11 last year. As the anniversary of his death rolls around, Hollywood celebrities and fans took to social media to honor the "Mrs. Doubtfire" actor.

Sarah Michelle Gellar, who worked with Robin on CBS's series "The Crazy Ones", took to Instagram to share a photo of a bench from the late actor's movie "Good Will Hunting" along with lines from Ralph Waldo Emerson's poem.

" 'To laugh often and much; to win the respect of the intelligent people and the affection of children; to earn the appreciation of honest critics and endure the betrayal of false friends; to appreciate beauty; to find the beauty in others; to leave the world a bit better wether by a healthy child, a garden patch, or a redeemed social condition; to know that one life has breathed easier because you lived here. This is to have succeeded' #Emerson You succeeded RW #RobinWilliams."

"To laugh often and much; to win the respect of the intelligent people and the affection of children; to earn the appreciation of honest critics and endure the betrayal of false friends; to appreciate beauty; to find the beauty in others; to leave the world a bit better wether by a healthy child, a garden patch, or a redeemed social condition; to know that one life has breathed easier because you lived here. This is to have succeeded" #Emerson You succeeded RW #RobinWilliams

A photo posted by Sarah Michelle (@sarahmgellar) on Aug 10, 2015 at 9:06pm PDT

John Stamos wrote on Twitter, " 'Dear money, send mom' Robin Williams. The first autograph I ever got. You are missed Robin. #RobinWilliams." Patton Oswalt simply tweeted, "I miss Robin." LeAnn Rimes posted on Instagram a quote about perfection using a line from "Good Will Hunting" along with caption, "#robinwilliams #goodwillhunting So heartbreaking! I'll never forget being in his presence and laughing til my face hurt. We miss you down here."

#robinwilliams #goodwillhunting So heartbreaking! I'll never forget being in his presence and laughing til my face hurt. We miss you down here. www.suicidepreventionlifeline.org 1-800-273-TALK (8255)

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A photo posted by LeAnn Rimes Cibrian (@leannrimes) on Aug 11, 2015 at 7:20am PDT

Luke Friend posted, "Just how on earth has it already been a year since Robin Williams past I still miss him and his artistry so much. #ForeverRW." Ian Royce wrote, "@robinwilliams There will never be another you. You were beyond anything normal.You found time to notice me. Hug my brother. #BeyondALegend." Eric Lange added, " 'You're only given a little spark of madness, you mustn't lose it.' RIP #RobinWilliams."

We remember Robin Williams. pic.twitter.com/ZFdfEmRzVK

— The GRAMMYs (@TheGRAMMYs) August 11, 2015

You ain���¢�¯�¿�½�¯�¿�½t never had a friend like me! You are missed. #RobinWilliams pic.twitter.com/iUaexwaTYz

— Disney Music (@DisneyMusic) August 11, 2015