Tetrabiblos

The Tetrabiblos is a four-volume work by Ptolemy, an Egyptian astronomer, mathematician, and geographer of Greek descent who lived in Alexandria during the 2nd century CE. It is also known as Apotelesmatika, meaning "Astrological Influences".1

In this work, Ptolemy sought to establish astrology on a scientific basis, viewing it as an inexact science that describes the physical effects of the heavens on terrestrial life. He aimed to reconcile traditional astrological doctrines with an Aristotelian understanding of nature. The Tetrabiblos outlines the correspondences between celestial bodies and earthly phenomena, including elements, qualities, and human characteristics. It details how planetary positions and configurations at the moment of birth could influence an individual's life.123

While the Tetrabiblos is considered foreign to modern readers due to its acceptance of astral prognostication, it represents a significant attempt to systematize astrological beliefs within the scientific framework of its time.1