Viktor E. Frankl (1905-1997) was an Austrian neurologist and psychiatrist as well as a Holocaust survivor. He is best known as the founder of logotherapy, a form of existential analysis, and for his bestselling book "Man's Search for Meaning," which describes his experiences and psychological insights gained during his time in Nazi concentration camps. In his work, Frankl argued that the primary human drive is not pleasure, as Freud had believed, but rather the pursuit of what we find meaningful in life. His approach to psychology has been influential in the field of existential therapy and personal development.