These seven simple, inspirational posters will inspire your students with relevant thoughts about the power of acting and theater. As a high school theater teacher myself, I often find that I need to come back over and over to the grounding philosophies of theater that I believe in so that I can ably teach these ideas to my students. Some of these include the idea that theater really does change lives, both for the people participating in it as actors, designers, or techs, and for the audience.