While it is not usually the first thing that science educators focus on in our communication with students, colleagues, or community members, the act of teaching is underpinned by a belief in, and hope for, a better future. While we do not necessarily share the same identity and ideology across populations, as this chapter shows, we as educators invest our time and energy in the work we do as idealists. We truly believe that growing understanding can foster a better and more interesting future. Teacher background information, references, and resources are provided. This book selection also includes the Table of Contents, Preface, About the Authors and Contributors, and Index.