been called by Munk "a popular manual of morals." It was composed by Gabirol at Zaragoza in 1045, at the request of some friends who wished to possess a book treating of the qualities of man and the methods of effecting their improvement. The innovations in the work are that it presents the principles of ethics independently of religious dogma and that it proposes that the five physical senses are emblems and instruments of virtue and vice, but not their agents; thus, a person's inclination to vice is subject to a person's will to change. Gabirol presents a tabular diagram of the relationship of twenty qualities to the five senses, reconstructed at right, and urges his readers to train the qualities of their souls unto good through self-understanding and habituation. He regards man's ability to do so as an example of divine benevolence. While this work of Gabirol is not widely studied in Judaism, it has many points in common with Bahya ibn Paquda's very popular work Chovot HaLevavot, written in 1040, also in Zaragoza. Mivchar HaPeninim Mukhtar al-Jawahir (), Mivchar HaPeninim (. lit. "The Choice of Pearls"), an ethics work of sixty-four chapters, has been attributed to Gabirol since the 19th century, but this is doubtful. It was originally published, along with a short commentary, in Soncino, Italy, in 1484, and has since been re-worked and re-published in many forms and abridged editions (e.g. Joseph Ḳimcḥi versified the work under the title "Shekel ha-Kodesh"). The work is a collection of maxims, proverbs, and moral reflections, many of them of Arabic origin, and bears a strong similarity to the Florilegium of Hunayn ibn Ishaq and other Arabic and Hebrew collections of ethics sayings, which were highly prized by both Arabs and Jews. Poetry Gabirol wrote both sacred and secular poems, in Hebrew, and was recognized even by his critics (e.g. Moses ibn Ezra and Yehuda Alharizi) as the greatest poet of his age. His secular poems express disillusionment with social mores and worldliness, but are written with a sophistication and artistry that reveals him to have been socially influenced by his worldly Arabic contemporaries. Gabirol's lasting poetic legacy, however, was his sacred works. Today, "his religious lyrics are considered by many to be the most powerful of their kind in the medieval Hebrew tradition, and his long cosmological masterpiece, Keter Malchut, is acknowledged today as one of the greatest poems