Περί Ψυχής

Significant for its contributions to psychology, biology, and metaphysics, addressing fundamental inquiries regarding the living beings, including plants, animals, and humans. The opening of this treatise introduces the complexities surrounding the study of the soul, emphasizing its importance in understanding the essence of living beings. Aristotle presents various questions regarding the nature of the soul—whether it can be divided into parts, how it relates to the body, and the differences between various types of souls across species. He critiques previous philosophers' theories while laying the groundwork for his own examination, suggesting that an understanding of both the soul's powers and its connection to the body is essential for an accurate study of its nature.