Bob Saget fights back tears remembering Robin Williams: 'He was beloved' (exclusive)

Bob Saget is opening up about his close friendship with the late Robin Williams.

The comedian spoke with ET's Nischelle Turner at the Hollywood premiere of HBO's new documentary, Robin Williams: Come Inside My Mind, on Wednesday, where he had a hard time fighting back tears as he emotionally reflected on the impact the iconic actor had on his life and his career.

"Oh, you're killing me, you're killing me," Saget said as he began to get emotional while explaining how Williams' untimely death in 2014 left "a huge chasm in everybody's life."

"[He was] a whirlwind of energy a beautiful human being," Saget said, solemnly. "[It was] a giant loss. Everybody felt it."

"In 1978, I moved to L.A. went to the Comedy Store, met Robin right away, he had just finished with Rowan and Martin's Laugh-In [and] it was before Mork and Mindy, and he just liked me and my act," Saget shared, recalling the start of their life-long friendship.

RELATED: See Bob Saget and his fiance Kelly:

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Bob Saget and Kelly Rizzo
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Bob Saget and Kelly Rizzo
HOLLYWOOD, CA - JUNE 27: Actor / Comedian Bob Saget (L) and Kelly Rizzo attend the premiere of 'Robin Williams: Come Inside My Mind' from HBO Documentary Films' at the TCL Chinese Theatre IMAX on June 27, 2018 in Hollywood, California. (Photo by Paul Archuleta/FilmMagic)
HOLLYWOOD, CA - JUNE 27: Bob Saget (L) and Kelly Rizzo attend the Los Angeles Premiere of Robin Williams: Come Inside My Mind from HBO on June 27, 2018 in Hollywood, California. (Photo by Jeff Kravitz/FilmMagic for HBO)
LOS ANGELES, CA - APRIL 04: Bob Saget and Kelly Rizzo are seen on April 04, 2018 in Los Angeles, California. (Photo by gotpap/Bauer-Griffin/GC Images)
HOLLYWOOD, CA - MARCH 14: Actor / Comedian Bob Saget (L) and Kelly Rizzo (R) attend the screening of HBO's 'The Zen Diaries Of Garry Shandling' at Avalon on March 14, 2018 in Hollywood, California. (Photo by Paul Archuleta/FilmMagic)
Love the people in this picture. The most loving and legendary @George_Shapiro Katie Killean & of course my gal Kelly. In case you’re wondering, we were celebrating our engagement— and I know George and I will be very happy together.
How did I suddenly show up in Rio with my GF and my BFF for his birthday! Happy Birthday John!
I'm a lucky dude. Repost @eattravelrock - Romantic date night with my incredible man celebrating several milestones. @bobsaget 🍣🍶
BEVERLY HILLS, CA - JUNE 16: Actors Bob Saget and Kelly Rizzo attends the 30th Annual Scleroderma Benefit at the Beverly Wilshire Four Seasons Hotel on June 16, 2017 in Beverly Hills, California. (Photo by Leon Bennett/WireImage)
NEW YORK, NY - MARCH 28: Kelly Rizzo and Bob Saget attend the Garden of Laughs concert benefitting The Garden of Dreams Foundation at The Theater at Madison Square Garden on March 28, 2017 in New York City. (Photo by Gary Gershoff/WireImage)
HOLLYWOOD, CA - OCTOBER 15: Actor Bob Saget and Kelly Rizzo attend the Skip1 Night for helping impoverished children and families at Loews Hollywood Hotel on October 15, 2016 in Hollywood, California. (Photo by Michael Tullberg/Getty Images)
Took a pic of my girlfriend @eattravelrock (that's her legal name) just so I could photobomb it. Waiting at the airport for delayed flight cause apparently they work on the runways on weekends. Great idea, right? Doesn't anybody work at night anymore?
Excited to go enjoy my bff @johnmayer play with @deadandcompany in Vegas. Here we are backstage with my gal @eattravelrock aka Kelly and my buddy @therealmikeyoung aka Mike.
Headed to an undisclosed vacation for the birthday celebration of my girlfriend Kelly aka @eattravelrock ~ FYI– We're not on a bus.
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The Full House alum also praised Williams for his generosity and dedication to helping others, explaining how the iconic star volunteered to perform at seven different benefit galas for the Scleroderma Research Foundation -- which Saget is closely involved with.

"We raised $46 million in those years for research because of Robin. That's how philanthropic he was," Saget shared.

Looking back at the breadth of Williams' impressive career, Saget couldn't help but marvel at his immense versatility.

"If he had never been a stand-up, which would have been a loss for everybody, if he'd just done the movie parts that he did, [like] Mrs. Doubtfire, Goodwill Hunting, you'd go, 'My God, what a genius actor!'" he said. "This is a man that was a force that you don't see [but] every couple hundred years."

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Robin Williams Quotes
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Robin Williams Quotes

“You’re only given one little spark of madness. You mustn’t lose it.”

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“Comedy is acting out optimism.”

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“You have this idea that you’d better keep working otherwise people will forget. And that was dangerous.”

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“See, the problem is that God gives men a brain and a penis, and only enough blood to run one at a time.”

​Photo Credit: Jack Mitchell, Getty

“I used to think the worst thing in life was to end up all alone, it’s not. The worst thing in life is to end up with people that make you feel alone.”

Photo Credit: Alan Levenson via Getty

“We’ve had cloning in the South for years. It’s called cousins.”

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“If I asked you about art, you’d probably give me the skinny on every art book ever written. Michelangelo, you know a lot about him. Life’s work, political aspirations, him and the pope, sexual orientations, the whole works, right? But I’ll bet you can’t tell me what it smells like in the Sistine Chapel. You’ve never actually stood there and looked up at that beautiful ceiling; seen that. If I ask you about women, you’d probably give me a syllabus about your personal favorites. You may have even been laid a few times. But you can’t tell me what it feels like to wake up next to a woman and feel truly happy. You’re a tough kid. And I’d ask you about war, you’d probably throw Shakespeare at me, right, “once more unto the breach dear friends.” But you’ve never been near one. You’ve never held your best friend’s head in your lap, watch him gasp his last breath looking to you for help. I’d ask you about love, you’d probably quote me a sonnet. But you’ve never looked at a woman and been totally vulnerable. Known someone that could level you with her eyes, feeling like God put an angel on earth just for you. Who could rescue you from the depths of hell. And you wouldn’t know what it’s like to be her angel, to have that love for her, be there forever, through anything, through cancer. And you wouldn’t know about sleeping sitting up in the hospital room for two months, holding her hand, because the doctors could see in your eyes, that the terms “visiting hours” don’t apply to you. You don’t know about real loss, ’cause it only occurs when you’ve loved something more than you love yourself. And I doubt you’ve ever dared to love anybody that much. And look at you… I don’t see an intelligent, confident man… I see a cocky, scared shitless kid. But you’re a genius Will. No one denies that. No one could possibly understand the depths of you. But you presume to know everything about me because you saw a painting of mine, and you ripped my fucking life apart.” (From Good Will Hunting)

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“Reality is just a crutch for people who can’t cope with drugs.”

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“You know what music is? God’s little reminder that there’s something else besides us in this universe; harmonic connection between all living beings, every where, even the stars.” (From August Rush)

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“We were romantics. We didn’t just read poetry. We let it drip from our tongues like honey. Spirits soared. Women swooned, and gods were created, gentlemen. Not a bad way to spend an evening, eh?” (From Dead Poet’s Society)

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“They’re not that different from you, are they? Same haircuts. Full of hormones, just like you. Invincible, just like you feel. The world is their oyster. They believe they’re destined for great things, just like many of you. Their eyes are full of hope, just like you. Did they wait until it was too late to make from their lives even one iota of what they were capable? Because, you see gentlemen, these boys are now fertilizing daffodils. But if you listen real close, you can hear them whisper their legacy to you. Go on, lean in. Listen. You hear it? Carpe—hear it? Carpe, carpe diem. Seize the day, boys. Make your lives extraordinary.” (From Dead Poet’s Society)

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“Okra is the closest thing to nylon I’ve ever eaten. It’s like they bred cotton with a green bean. Okra, tastes like snot. The more you cook it, the more it turns into string.”

​Photo Credit: Jack Mitchell, Getty

“All of life is a coming home. Salesmen, secretaries, coal miners, beekeepers, sword swallowers, all of us. All the restless hearts of the world, all trying to find a way home.” (From Patch Adams)

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“You treat a disease, you win, you lose. You treat a person, I’ll guarantee you’ll win.” (From Patch Adams)

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“Do you think God gets stoned? I think so … look at the platypus.”

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“The Moon… It hangs like a testicle in the sky…”

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“I believe in destiny. There must be a reason that I am as I am. There must be.”

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“Most of all, I want to thank my father, up there, the man who when I said I wanted to be an actor, he said, ‘Wonderful. Just have a back-up profession like welding’.”

Photo Credit: Ron Galella, Getty

"What's right is what's left if you do everything else wrong."

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“Death is nature’s way of saying, ‘your table is ready.’”

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The 62-year-old comic continued to fight back tears as he admitted that it's still hard for him to refer to Williams in the past-tense, with words like "was," and looked back on one of his favorite memories.

"There's one time when I was in the Comedy Store in La Jolla [California], and he was there and I was feeling bummed out about my career and he said, 'Hey come in here.' And we went in the dressing room and we watched TV with the sound off and just made up words," Saget remembered. "He liked funny people. He could tell when someone was talented and he wanted to know all about them and work them, figure them out. And he was beloved and he was special."

HBO's Robin Williams: Come Inside My Mind reveals an intimate look into the tumultuous, brilliant and complex life of the beloved comic, who died of suicide in August 2014 at age 63. The documentary premieres on July 16.

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