The protagonist in "The Handmaid's Tale" conveys a deep sense of uncertainty and fear regarding her reality. She questions whether her perceptions are accurate or merely products of a paranoid mind. This highlights a central theme of the struggle between sanity and delusion, especially in oppressive contexts.

The quote also emphasizes the worth of sanity, comparing it to a precious resource that one must carefully protect and preserve. The character feels compelled to safeguard her mental state, anticipating future challenges that may threaten it. This analogy illustrates how critical mental stability is in a world filled with chaos and control.