Matthew Lawrence, who costarred with Robin Williams in "Mrs. Doubtfire," says the late actor opened up to him about the dangers of substance abuse.

Actor and comedian Robin Williams left a lasting impression on his young "Mrs. Doubtfire" co-star Matthew Lawrence, who said in

Robin Williams is an actor who needs no introduction in Hollywood. The late actor did some legendary movies like The Dead Poets Society, Goodwill Hunting, Awakening, and more, and made his mark in Hollywood with his impeccable acting skills.