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Robin Williams’ son Zak gave a touching speech at the Christopher & Dana Reeve Foundation’s Gala, reports Rob Shuter of naughtygossip.com.

“Robin was my father, Chris was my godfather and their friendship, beginning as college roommates at Juilliard, was nothing short of amazing,” Zak told the crowd. “The Chris I spent the most time with was after the accident, and I honestly think it was after that, that my father’s and [Reeve’s] friendship evolved into something deeper. It was then that Chris and Dad became family, brothers from another mother.”

Zak continued, “I miss them dearly, but know that they are here within all of our hearts. In my eyes, they are my superheroes. Goodness was baked into their DNA.”

Zak then asked the crowd to “tell the people you love that you love them at any and every opportunity. If they are in physical pain, tell them there is hope. If they are in mental anguish, tell them there is hope.”