"Erostratus"
A story about a misanthropic man who resolves to follow the path of Herostratus and make history by means of an evil deed—in this case, by killing six random people (one for each bullet in his revolver). The man is exhilarated by the sense of power he receives when carrying his revolver on the streets within his pocket. "But I no longer drew assurance from that, it was from myself: I was a being like a revolver, a torpedo or a bomb." Sartre gives the reader an insightful account about how a man's nature changes with the objects of his possession, but the object itself is unable to change the internal man, as seen in the conclusion.
Read more about this topic: The Wall (book)