Robin Williams committed suicide one year ago, on August 11, 2014, following a long battle with addiction and mental illness. His late wife later reported that Williams was also in the early stages of Parkinson's disease. The actor's death was tragic for Williams' fans, friends, and family members. He left behind an extraordinary legacy as a comedian. He'd been suffering from addiction for decades, and after a 20-stint of sobriety, he started drinking again in 2006. He explained the struggle to ABC News' Diane Sawyer in an interview that year.

"It's [addiction]—not caused by anything, it's just there," Williams said. "It waits. It lays in wait for the time when you think, 'It's fine now, I'm OK.' Then, the next thing you know, it's not OK. Then you realize, 'Where am I? I didn't realize I was in Cleveland.'"

After he died in 2014, many of his friends and former colleagues came forward to express devastation over his death and acknowledge the struggles of mental illness.

"There is simply no way Robin could have understood the way the rest of us saw him," comedian Jim Norton wrote in a piece for TIME. "And there is simply no way he could have understood how much respect and adoration other performers had for him. At least I hope he couldn’t have understood. Because it’s too sad to think that maybe he did understand, and it just wasn’t enough anymore."

Earlier this month, CNN Money published a piece about Williams' son Zak who started teaching finance to San Quentin inmates following his dad's death.

"[G]iving back, and trying to add value to people's lives is something that's been very helpful for me personally," Zak Williams told the publication, adding that he often thinks about his father when he enters San Quentin. "He was very compassionate towards those who might not have been dealt a great hand in life. His capacity for compassion and love was limitless ... it was something that brought him great joy, providing happiness and laughter for untold millions and millions of people."

#RobinWilliams began trending Tuesday morning as people all over remembered his life. Here are some great tributes to the performer:

If you or someone close to you needs emotional help, you can contact the National Suicide Prevention Lifeline at 1 (800) 273-8255.