Ring Against the Logicians, filsuf Pyrrhonist Sextus Empiricus nyambatang tata cara sané kalaksanayang olih para filsuf Yunani Kuno rikala ngepah tattwa, nyatet indik kepahan tetiga kepahan puniki kacumpuin olih Plato, Aristoteles, Xenocrates, and Stoa.
In Against the Logicians the Pyrrhonist philosopher Sextus Empiricus detailed the variety of ways in which the ancient Greek philosophers had divided philosophy, noting that this three-part division was agreed to by Plato, Aristotle, Xenocrates, and the Stoics.