"he woke with extreme suddenness saying to himself the death of the soul" who and why say this line in Mrs dalloway?

This line is said by Septimus Warren Smith in Virginia Woolf's novel "Mrs. Dalloway." Septimus is a shell-shocked war veteran who is struggling with his mental health and experiencing severe trauma from his time in the war. The line reflects his deep despair and sense of hopelessness, as he grapples with the idea that his soul has been irreparably damaged by the horrors he witnessed during the war. This moment highlights the profound impact that war can have on individuals and the lasting effects it can have on their mental well-being.

Septimus Warren Smith says this line to himself in Mrs. Dalloway.

He is a shell-shocked veteran of the First World War who is suffering from post-traumatic stress disorder. He believes that his soul has died as a result of war trauma, which left him feeling numb and alienated from the world.