"Almagest" is a seminal work on astronomy and mathematics, written in the 2nd century. The book presents a comprehensive system of the world, including a detailed account of the fixed stars and the motions of the planets. It also includes a mathematical toolkit that was essential for understanding the heavens in its time, such as a catalogue of stars, the lengths of the tropical year and the lunar month, and the theory of the Sun, Moon, and planets. The book's geocentric model, where the Earth is at the center of the universe, was widely accepted until the Copernican Revolution.

This book is a comprehensive examination of the Jewish laws as interpreted through the lens of Hellenistic philosophy. The author uses allegory to explain the significance and deeper meanings behind these laws, drawing on both Jewish and Greek philosophical traditions. The text serves as an exploration of morality, ethics, and religious observance, offering readers a unique perspective on Jewish law and its intersection with broader philosophical concepts.

"Gospel of Truth" is a theological text that offers a unique interpretation of Christian doctrine from the perspective of Valentinian Gnosticism. The text explores the Gnostic view of Jesus Christ and His teachings, focusing on the concepts of knowledge, truth, and salvation. It delves into the idea of the spiritual realm, the divine Father, and the fall and redemption of mankind, presenting an alternative perspective to mainstream Christian thought.