Austrian psychiatrist and psychologist, former prisoner of a Nazi concentration camp. Viktor Frankl is the author of the concept of logotherapy (see Logotherapy in Chapter 2.1. Key Psychological Concepts in Clinical Psychology), according to which the driving force of human behavior is the desire to find and realize the meaning of life existing in the external world. A person does not ask this question, but answers it with his real actions. The role of meaning is played by values – semantic universals that generalize the experience of mankind. He is also known worldwide as the founder of the third Viennese school (after Freud’s psychoanalysis and Adler’s individual psychology). In his seminal work Man in Search of Meaning (published in 1959 as From the Death Camp to Existentialism, the first edition appeared in 1946 as Trotzdem Ja zum Leben sagen: Ein Psychologe erlebt das Konzentrationslager), Frankl describes his personal experience of survival in a concentration camp and outlines his psychotherapeutic method of finding meaning in all aspects of life. even the most terrible, thereby creating an incentive to continue life.