The quote "Are you mad?" from David Mitchell’s "Cloud Atlas" suggests a deeper exploration of sanity and perception. It highlights the complexities inherent in human evaluation of others' mental states, as questions about sanity often reflect societal norms and personal biases rather than objective truths. The inquiry carries implications that delve into the expectations of conformity and the challenge of embracing individuality in the face of public scrutiny.

This phrase encapsulates a recurring theme in the book, where characters grapple with their identities amid tumultuous experiences. The narrative intertwines various lives across different timelines, emphasizing how perceptions of madness and normality can shift dramatically depending on context and circumstance. Ultimately, the question serves as a catalyst for self-reflection, urging readers to reconsider their own definitions of sanity.