Final answer:
The central theme in Viktor Frankl's work is the search for meaning in life, a concept deeply rooted in existentialist philosophy, exemplified by his logotherapy and reflections on his concentration camp experiences.
Step-by-step explanation:
The central theme running through the works of Viktor Frankl is the search for meaning in life, particularly through the lens of his experiences in concentration camps and his psychological theories. This theme is related to broader existential questions about the nature of human freedom, suffering, and the capacity to find purpose in adverse circumstances, themes which are shared by existential philosophers like Camus, Nietzsche, and others.
Frankl's notion posits that individuals can find profound significance and purpose in life despite dire circumstances, an idea that aligns with the existentialist emphasis on individual freedom and choice. In this way, Frankl contributes to a deeper understanding of the human condition and the importance of personal responsibility and the will to meaning, which can be seen as a form of resistance against the existential void.