In its own way a page-turner, his Treatise on Logic is a useful little guide to Maimonidean thought. This version of the 1938 English translation by Israel Efros for the American Academy of Jewish Research comes with the Arabic original and three Hebrew translations (ibn Tibbon, Ahitub, and Vivas). As presented by the author in the short introduction, the Treatise on Logic is an outline explaining the meanings of terms used in logic. The treatise is a little universe in its own right. Reminding the reader of the concision brought to bear upon the vast apparatus of Jewish law in the Mishne Torah, this is accomplished with “extreme brevity” without the indulgence of overly long discourse.