"Everybody has a gift, and these young stars should learn how to celebrate life, feel good about living, and do what they love. It will turn them around, and they won't end up doing something that will kill them," the New York Post quoted him as saying at his and wife Susan Benedetto's Exploring the Arts gala.
Bennett, 85, who dabbled with cocaine as a young man, also said, "Woody Allen's manager, Jack Rollins, used to handle Lenny Bruce, who was a brilliant comedian, but was hooked on heroin. He said something that changed my life.
"He sinned against his talent. It affected me so much that I just got rid of everything," he added.