Maggie Simpson Maggie's occasional speaking parts and other vocalisations are currently provided by Nancy Cartwright, but she has also been voiced by guest stars James Earl Jones, Elizabeth Taylor and Jodie Foster, and by series regulars Yeardley Smith and Harry Shearer. Maggie has appeared in various media relating to "The Simpsons" – including video games, "The Simpsons Movie", "The Simpsons" Ride, commercials and comic books – and has inspired an entire line of merchandise. "The Simpsons" uses a floating timeline in which the characters do not physically age, and as such the show is assumed to be set in the current year.
Lisa's First Word that he hopes she never says a word. But as soon as he turns off the light and closes the door, Maggie takes her pacifier out of her mouth and utters the word "daddy", before going to sleep. "Lisa's First Word" was written by Jeff Martin, and directed by Mark Kirkland. "The Simpsons" writers Mike Reiss and Al Jean were discussing about having an episode where Maggie would say her first word, and Reiss thought it would be cute to have her say "daddy" when no one could hear her. Jeff Martin was assigned to write the episode because he