Stella Adler was an influential American actress and acting teacher, born on February 10, 1901, in New York City. She was a prominent figure in the Group Theatre, which aimed to create socially relevant plays. Adler is best known for her unique approach to acting, emphasizing the importance of imagination and emotional truth. In the 1940s, Adler founded the Stella Adler Studio of Acting in New York, where she taught many aspiring actors, including Marlon Brando and Robert De Niro. Her teachings focused on character development and the actor's relationship to the text, leaving a lasting impact on the craft of acting.