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Viktor Frankl M.D., Ph.D. (March 26, 1905, Leopoldstadt, Vienna – September 2, 1997, Vienna) was an Austrian neurologist and psychiatrist as well as a Holocaust survivor. Frankl was the founder of logotherapy, which is a form of Existential Analysis, the "Third Viennese School of Psychotherapy". His best-selling book, Man's Search for Meaning (published under a different title in 1959: From Death-Camp to Existentialism, and originally published in 1946 as trotzdem Ja zum Leben sagen: Ein Psychologe erlebt das Konzentrationslager), chronicles his experiences as a concentration camp inmate based on his psychotherapeutic method of finding meaning in all forms of existence, even the most sordid ones, and thus a reason to continue living. Frankl was one of the key figures in existential therapy and a prominent source of inspiration for humanistic psychologists.