The saddest day in the world will be the one when she stops pretending.

Summary

This quote suggests that pretending, or putting on a facade, is serving as a defense mechanism for someone. It implies that the day this person stops pretending, their true emotions and vulnerabilities will be exposed, and this will be a moment tinged with sadness. It underscores the value or necessity of pretending to maintain one's emotional well-being or to protect oneself from the harsh realities of life.