Who is Septimus Warren Smith in Mrs. Dalloway?

In Virginia Woolf’s 1925 novel Mrs. Dalloway, Septimus Warren Smith is a World War I veteran suffering from shell shock—a condition now recognized as post-traumatic stress disorder (PTSD).1

Septimus serves as a foil to the protagonist, Clarissa Dalloway. While Clarissa navigates the superficial expectations of high society to cope with her own internal struggles, Septimus represents the profound, unacknowledged trauma of the war. His suffering is largely misunderstood by those around him, including the medical professionals who intend to commit him to a psychiatric institution.1

Unable to accept the loss of his autonomy and the prospect of confinement, Septimus dies by suicide. Upon hearing of his death, Clarissa identifies with his overwhelming sense of isolation and admires his choice to preserve the integrity of his soul, contrasting his act of defiance with her own emotional compromises. Through this character, Woolf forces readers to confront the internal realities of mental illness in the aftermath of the war.1