'The processes of logic, too, are unfruitful.'
This we will consider presently: but even if one should concede this, it is enough that logic has the power to analyse and distinguish other things and in fact, as one might say, has the power to weigh and measure. Who asserts this? Is it only Chrysippus and Zeno and Cleanthes? Does not Antisthenes agree? Why, who is it that has written, 'The beginning of education is the analysis of terms'? Does not Socrates too say the same? Does not Xenophon write of him that he began with the analysis of terms, to discover what each means?
Source: The Discourses of Epictetus, tr. by P.E Matheson,