This volume presents the first critical edition and translation of Epistle 3 of the Brethren of Purity. 'On Astronomia' uses examples from astronomy and astrology to provide spiritual, moral, and soteriological guidance, and argues that the study of Astronomia helps the soul achieve ultimate happiness.
This is the first critical edition of Epistle 4 of the Brethren of Purity (Ikhwan al-Safa'), a tenth-century esoteric fraternity based in Basra and Baghdad. It offers a glimpse into medieval geographical and cosmological views in the Islamic world, and into the Ikhwans' understanding of science as a method to decipher the signs of God's creation.
In this book, Nicolas Baumard explores the theory that morality was originally an adaptation to the biological market of cooperation, an arena in which individuals competed to be selected for cooperative interactions.