Aaron BeckCounseling and Psychotherapy Major Figures Series 8. The two major mountain ranges of modern psychotherapy are cognitive behavioral therapy and psychodynamic therapy. In particular, the theory of Aaron Beck, the founder of cognitive therapy, has played a key role in the development of cognitive behavioral therapy, as well as being one of the most widely used psychotherapies in the world. In this book, Aaron Becks life, personality traits, and developmental process of cognitive therapy are introduced in detail, as well as cognitive theory and cognitive theory of cognitive disability, empirical evidence, misunderstandings and truths about cognitive therapy, And the direction of development.