The mood throughout Man's Search for Meaning is somber yet reflective. Surprisingly, it is even hopeful at times. Much of this somber mood arises from the book’s setting: the variety of concentration camps in which Frankl was imprisoned during the Holocaust. Therefore, images and memories of intense suffering pervade throughout, evoking in the reader a somber feeling.
However, as Frankl writes in the beginning of Part I, the primary purpose of Man’s Search for Meaning is to lay out his doctrine on finding meaning in times of suffering. Rather than only dwell on the difficulty of life in the concentration camps, he uses his memories to support his philosophical and psychological beliefs that a greater purpose remains possible even in the darkest conditions. As such, Frankl instills in his readers an understanding of the harshness of the conditions in the camps but also an optimistic view of the future. While he recounts this suffering, he always leaves open for the readers an opportunity for reflection—and hope—within their own lives.
In Part II, which outlines the pillars of logotherapy, the mood continues to offer a reflective or hopeful feeling for the reader. By describing his doctrine of logotherapy and providing examples of healed patients, Frankl provides a path for readers to discover meaning in their own lives.