One, None, and One Hundred Thousand by Luigi Pirandello is a profound exploration of identity, perception, and the fluidity of the self. In this novel, Pirandello presents a protagonist, Vitangelo Moscarda, who begins to question his sense of self after a casual remark about his appearance. This seemingly trivial event leads Moscarda to realize that he is perceived differently by every person he encounters, resulting in a crisis of identity.

The novel delves into themes of existentialism, highlighting the disparity between how we see ourselves and how others perceive us. Moscarda's journey illustrates the fragmentation of identity, as he grapples with the notion that he is not a single, fixed individual but rather a multiplicity of selves shaped by the perspectives of others. The title itself — One, None, and One Hundred Thousand—reflects this idea, signifying the many versions of a person that exist in the minds of others, as well as the elusive nature of true self-knowledge.