I don't know man, maybe you're right. Brando had a hard life. But if you watch the film from which that quote originates, "Listen to me Marlon", he backs it up with his experiences. Like, in one of the first films he did called "The Wild One" he plays this "electrifying" role as a macho dude on a motorcycle who also has feelings too. Brando knew at the time that was gonna make bank, because of all the shit in the news about Hell's Angels.