"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. For Deborah and Michael and Lilliana this is crushing. And it's bad for the rest of the world. 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."
Edie Falco, co-star on "The Sopranos":
"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."
Jamie-Lynn Sigler, co-star on "The Sopranos":
"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 Deborah, Michael 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."
Brad Pitt co-star on "The Mexican":
"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."
John Travolta:
"James went out of his way to come to Florida and he would not leave Florida until I was okay, or he felt that I would be fine [after his son Jett died in 2009]," he told "Good Morning America." "After a week I said, 'Jim you can really, you know, we'll be fine. I've got a lot of support here. But the idea that in our profession someone would go out of their way and not want to leave you until he felt you were okay, that's the kind of soul that James Gandolfini was. He was a people person first and then everything else."
Steven Van Zandt (L) co-star on "The Sopranos":
"I have lost a brother and a best friend. The world has lost one of the greatest actors of all time." - @StevieVanZandt
Christina Applegate co-star on "Surviving Christmas"::
"I am so deeply saddened by the untimely passing of sweet James Gandolfini! My heart is broken for his family!! I'm in shock" - @1capplegate
Jeff Daniels:
"RIP James Gandolfini. A great friend." - @Jeff_Daniels
Saoirse Ronan (R) co-stars on "Violet & Daisy":
"Jim was the kindest man who adored family. He was the best teacher any young actor could ask for and I can't believe he's gone." - @saoirse_ronan
Marcia Gay Harden (R) co-stars on "Cinema Verite":
"RIP #JamesGandolfini. Thank your for your love and light and masterful talent. You are already missed." - @Beloving2
Mark Ruffalo co-star on "All the King's Men":
"Oh Jimmy. It's a crying shame. You stormed in and out. Your voice like velvet granite. From a whisper to a shout. A comet of a man. So long" - @Mruff221
Susan Sarandon co-star on "Romance and Cigarettes":
"So sad to lose James Gandolfini. One of the sweetest, funniest, most generous actors I’ve ever worked with. Sending prayers to his family." - @SusanSarandon