Robin Williams' heartbreaking never-before-seen footage emerges in new documentary trailer

HBO's documentary titled Robin Williams: Come Inside My Mind will shed light on the late actor's life and career.

Williams believed that humans were only given a little spark of madness and said if we lose that we spark, we are nothing. He brought that spark into every character he portrayed.

Included in the documentary is never-before-seen footage of Williams not only doing what he does best on stage, but of him talking about his personal struggles as well.

The veteran actor committed suicide in 2014, at the age of 63. An autopsy report revealed that no traces of alcohol or illegal drugs were found in his system.

As reported by CNN four months after his death, Williams experienced an 'increase in paranoia' and was posthumously diagnosed with Lewy body dementia.

Not everybody understood the message Williams was trying to get across through his work. He was once asked what he was he hoping to achieve.

To an outsider, his comedy and dreams 'were just words and ideas.' Williams famously responded:

"No matter what people tell you, words and ideas can change the world. We don't read and write poetry because it's cute. We read and write poetry because we are members of the human race. And the human race is filled with passion."

Robin Williams, YouTube / HBO, June 7, 2018.

Williams doubted in himself at times. In the interview, his son, Zachary Pym Williams, said that his father "didn't always feel he was succeeding."

However, Zachery was quick to add: "But he was the most successful person I know." The documentary also explores the darker side of Williams' psyche, including his fear of abandonment.

The award-winning documentary is directed by Marina Zenovich and premiers on July 16th on HBO. To learn more about Williams' life, follow our Twitter account, AmoMama USA.