In the narrative, David expresses his disbelief and frustration through a distinctly German style of argumentation, characterized by a tone that suggests both exasperation and surprise. He insists that certain behaviors or actions are universally adopted by others, reflecting a common rationalization often used in debates. His statement points to a tendency in human nature to justify personal actions by claiming they are widely accepted.

This moment captures a broader theme in Nabokov's work, illustrating how individuals navigate their moral and ethical landscapes. By emphasizing the idea that "everyone does it," David reveals the complexities of social norms and individual choices, while also highlighting the internal conflicts that arise from trying to reconcile personal behavior with societal expectations.