"Heartbroken. Thanks chief - for your friendship and for what you gave the world. Robin had a ton of love in him. He personally did so much for so many people. He made Matt and my dreams come true. What do you owe a guy who does that? Everything. May you find peace my friend. #RobinWilliams." Affleck wrote.
Alongside best friend Matt Damon and Williams, the trio worked together on the 1997 drama "Good Will Hunting" in which they all took home gold statues. Williams won the Oscar for best supporting actor for his portrayal of Dr. Sean MaGuire, a therapist dealing with the death of his wife.