Samuel Ibn Tibbon (c. 1165-1232) - the eminent translator, philosopher, and exegete - is most famous for his Hebrew translation of Maimonides' Guide of the Perplexed. However, he wrote original works as well, and laid the foundations for a distinctive philosophical-exegetical movement, what is today called 'Maimonideanism'. James T. Robinson's book includes a first English translation of Ibn Tibbon's commentary on Ecclesiastes, which was the foundational work of the Maimonidean tradition. An introduction provides relevant historical, philosophical and exegetical background, explains difficult passages, and identifies Ibn Tibbon's important contributions to the emergence of Maimonideanism. It also unravels Ibn Tibbon's complicated discussion of the possibility of the immortality of the soul, a philosophical-theological problem that would become one of the most popular and controversial subjects in thirteenth- and early fourteenth-century Jewish thought.