Chovoth HaLevavoth. Translated by Judah ibn Tibbon.

An attractive copy of this classic work, with new corrections plus seven leaves of indices to Bible and Talmudim. Throughout the ages, Chovoth HaLevavoth enjoyed wide popularity in a variety of circles, although in later centuries Eastern European Jews would shy away from the introductory Sha’ar HaYichud, which is of a decidedly philosophical nature, and focus instead on the remainder of the work, with its ethical guidance. One of the “Tikunim” proposed by R. Ezekiel Landau, to a man who wished to rectify acts of promiscuity, was to study in-depth the Chovoth HaLevavoth. See his responsum in Noda BeYehuda Part 1, no. 35.