In a world where change seems like the only constant, some truths about education endure. Talented and inspiring professors can transform lives. Learning is best when there’s a connection between abstract ideas and the student’s own life. Interaction makes learning more effective and exciting. And, we believe, textbooks—whether in print or digital form—continue to play an important role by organizing course material into a coherent whole that reinforces and expands on information presented in class and online.