Sahl lived in the first half of the 9th century. His five short treatises, Introduction to Astrology, The 50 Precepts, Judgments of Questions, Elections, and Th

Abū Ma'shar's famous Great Introduction to traditional astrology was a major influence on medieval astrologers through its Latin versions, and is available and

Dr. Benjamin Dykes produces essential new translations of traditional astrology texts for modern students. Persian Nativities III contains a complete translatio

This volume presents six major works by the medieval astrologer Sahl b. Bishr, translated from Arabic into English by leading translator Benjamin Dykes.

Judgment and Decision Making is a refreshingly accessible text that explores the wide variety of ways people make judgments. It examines assessments of probabil