In Sinclair Lewis's book "It Can't Happen Here," the author explores the profound idea that one's social class is determined not purely by income but by spending habits. This perspective suggests that how individuals allocate their resources reflects their values and lifestyle choices, which ultimately shapes their social standing.

The quote emphasizes the importance of financial decisions over sheer earnings when it comes to class distinction. It proposes that meaningful and thoughtful spending reflects a person's character and priorities, influencing their overall position in society rather than just their salary alone.