RARE first German edition of a 15th-century treatise on the principles of Judaism by the eminent Jewish philosopher and rabbi Joseph Albo, a student of Hasdai Crescas, a contemporary of the great Maimonides. In this book, Albo defines and investigates what are according to his view the three fundamental Jewish principles of faith. His work can be understood as an alternative draft to Maimonides` 13 principles of faith. This edition also includes an introductory text by the editor Ludwig Schlesinger. Text in Gothic lettering (Fraktur). 140x220mm. 688+XXXXIV pages. Quarter leather Hardcover with blue marbled boards and gilt lettering on spine. Cover, cover edges and cover corners worn. Cover corners bumped. Spine worn and stained. Spine hinges cracked. Parts of spine missing. Page edges slightly browning. Pages browning, most pages bottom corner/part water stained, some pages age-stained. [SUMMARY]: This extremely rare first German edition of a Jewish classic medieval theological treatise has sustained some external wear, but is still in good reading condition.