Hollywood is mourning the loss of one of the greatest actors of our time, James Gandolfini, who passed away from a sudden heart attack yesterday in Italy at the age of 51.

James’ Sopranos co-stars, his friends and his admirers have been sending their condolences to his family and remember their fondest memories with him. Take a look at how the world of entertainment is remembering Tony Soprano.

David Chase, the creator of The Sopranos: "He was a genius. Anyone who saw him even in the smallest of his performances knows that. He is one of the greatest actors of this or any time. A great deal of that genius resided in those sad eyes. I remember telling him many times, 'You don't get it. You're like Mozart" There would be silence at the other end of the phone. He wasn't easy sometimes. But he was my partner he was my brother in ways I can't explain and never will be able to explain.”

Jamie-Lynn Sigler: "This news has left me heartbroken… I can only imagine the pain his family feels at this time, and my heart goes out to them, especially DeborahMichael, and Liliana. I spent 10 years of my life studying and admiring one of the most brilliant actors, yes, but more importantly, one of the greatest men. Jim had the ability, unbeknownst to him, to make you feel like everything would be alright if he was around. I treasure my memories with him and feel so honored that I was an up close witness to his greatness."

Edie Falco: “I am shocked and devastated by Jim’s passing. He was a man of tremendous depth and sensitivity, with a kindness and generosity beyond words. I consider myself very lucky to have spent 10 years as his close colleague. My heart goes out to his family. As those of us in his pretend one hold on to the memories of our intense and beautiful time together. The love between Tony and Carmela was one of the greatest I’ve ever known.”

John Travolta: “James went out of his way to come to Florida and he would not leave Florida until I was OK or he felt that I would be fine. After a week I said, 'Jim, you can really, you can, you know, we'll be fine. I've got a lot of support here. The idea that in our profession someone would go out of their way and not want to leave you until he felt you were OK, that's the kind of soul that James Gandolfini was. My goal is to make sure that his family is OK. His little boy, I watched him grow up and his brand-new little girl. We'll just make sure they're taken care of. That's the whole idea.""

Brad Pitt: "I admire Jimmy as a ferocious actor, a gentle soul and a genuinely funny man. I am fortunate to have sat across the table from him and am gutted by this loss. I wish his family strength and some semblance of peace."

Michael Imperioli: "Jimmy treated us all like family with a generosity, loyalty and compassion that is rare in this world.. Working with him was a pleasure and a privilege. I will be forever grateful having had a friend the likes of Jimmy."

Aida Turturro: "I've not only lost a great friend, but a true brother, on screen and off. James was the most generous actor to work with, but more so, a man with a heart of gold. I love him and my heart goes out to his family."

Lorraine Bracco: "We lost a giant today. I am utterly heartbroken."

Stevie Van Zandt: "I have lost a brother and a best friend. The world has lost one of the greatest actors of all time. Maureen and I send our deepest sympathy and love to Deborah, Michael, Lily, and all of Jimmy's family."

Rob Lowe: "James Gandoldini gave the greatest performance in the history of television. He was also a kind man. Condolences to his family."

Olivia Wilde: "James Gandolfini was a kind, funny, wonderful guy. I'm so lucky to have worked with him. Sending love to his family. Such a sad, sad day."

Steve Carell: "James Gandolfini. Unbelievably sad news. A fine man."

Will Arnett: "So saddened by news of James Gandolfini's death. What talent. He shall be missed."

Robin Williams: "My thoughts and prayers go out to James Gandolfini's family. An extraordinary actor. RIP, Mr. Gandolfini."

Ewan McGregor: "Jesus. The world just lost one of its great actors. James Gandolfini has passed away. Thoughts to his family. Such a talent. I'm saddened."

Octavia Spencer: "RIP James Gandolfini. So sad!!"

Jonah Hill: "I'm truly heartbroken to hear that James Gandolfini has passed away. He is one of my all time favorite actors. Tragic loss."

Jerry Ferrera: "Rip James Gandolfini. One of the greatest actors of our generation."

Rose McGowan: "I am heartbroken about James Gandolfini. He was a gentle giant and great man. I love this picture, I loved him."

Carson Daly: "SO SAD! PRAYING FOR HIS FAMILY- wow- Shocked by this news today...."

Susan Sarandon: "So sad to lose James Gandolfini. One of the sweetest, funniest, most generous actors I've ever worked with. Sending prayers to his family."

Bette Midler: "The great James Gandolfini passed away today. Only 51. I can't believe it."

Gilles Marini: "R.I.P James Gandolfini . Was an honor to teach your son Soccer and to have known You. You were such a great man and father. #Heartbroken"

Jimmy Kimmel: "I'm sadder about James Gandolfini than everyone else."

Our hearts are with James’ family. R.I.P.