RARE edition of Rabbi Abraham ibn Ezra`s `Yesod Mora` written in 1158 on the division of and reasons for the Biblical commandments, with German translation by Michael Creizenach (1789-1842) - an eminent German mathematician, educator, theologian, and an advocate of Reform on the basis of rabbinical Judaism. 160x110mm. 142+51 pages. Marbled rebound quarter-cloth Hardcover. Cover rubbed and scratched. Rear cover upper corner/edge partly broken (but still holding). Cover corners and upper edge bumped. Cover corners and edges, and spine edges peeling. Binding visible between endpaper and whitepage (German side). Pages yellowing and age-stained. [SUMMARY]: This extremely rare book has sustained some external damage to cover, but is internally in good condition.