Henry A. Murray was a renowned American psychologist who dedicated his life to unveiling the origins of life. He started out in the field of biochemistry and later decided to pursue psychology. He was inspired by the works of famous psychiatrist Carl Jung and even had private sessions with Jung, which is believed to have led him to the field of psychology. He considered conventional psychology incredibly dull, and in an era during which other academics often undermined psychological research, Henry Murray was able to revolutionize it with his unique methods. He was the co-developer of the popular Thematic Apperception Test (TAT), in which the subject is asked to invent a story after being shown a set of picture cards. He also used empirical methods and established the “longitudinal study.” In addition, he developed a branch of psychology known as “personology.” It mainly focused on studying the subject’s life history to find main themes, internal drives, and the outside factors that influenced personality formation. His methods were controversial, and he is alleged to have conducted several psychologically damaging experiments on future domestic terrorist Ted Kaczynski.