 We will concentrate here on the stages of argument up through the uniqueness of the First, with a few comments at the end on how Fârâbî hopes to get to its being intelligence (and to what kind of intelligence it is) and to its generating a Second. Sometimes Fârâbî just states his conclusions without explicit argument, and sometimes he suggests what premisses the conclusion is supposed to follow from, while leaving it to the reader to figure out how it is supposed to follow. It is usually not too hard to fill in a broadly plausible argument. But the obvious ways of doing this, not drawing on any technical Farabian metaphysical notions, are often disappointingly vague. We may be able to get more precise, using notions from the Book of Letters and On the One which Fârâbî’s terminology here points back to.