Humankind, scientists agree, is a tiny and insignificant anomaly in the vastness of the universe. But what would that universe look like if we were not here to say something about it? In this brilliant, insightful work of philosophy, beloved novelist and playwright Michael Frayn examines the biggest and oldest questions of philosophy, from space and time to relativity and language, and seeks to distinguish our subjective experience from something objectively true and knowable. Underlying all revelations in this wise and affectionately written book is the fundamental question: If the universe is what we make it, then what are we?