Epictetus on the usefulness of logic

“Most people are unaware that the handling of arguments which involve equivocal and hypothetical premisses, and, further, of those which derive syllogisms by the process of interrogation, and, in general, the handling of all such arguments, has a bearing upon the duties of life. For our aim in every matter of inquiry is to learn how the good and excellent person may find the appropriate course through it and the appropriate way of conducting themselves in it. …

For what is the professed object of...