 Disquisitions Relating to Matter and Spirit

"Disquisitions Relating to Matter and Spirit" is a philosophical work written by the British philosopher and psychologist Joseph Priestley. First published in 1777, the book explores the nature of matter and consciousness, discussing the relationship between the material world and the mind or spirit. Priestley, who is best known for his contributions to chemistry and his work on the discovery of oxygen, also delved into metaphysical questions.