The Discourses

by Epictetus

But when you must write something to your friend, grammar will tell you what words you must write; but whether you should write or not, grammar will not tell you. And so it is with music as to musical sounds; but whether you should sing at the present time and play on the lute, or do neither, music will not tell you. What faculty then will tell you? That which contemplates both itself and all other things. And what is this faculty? The rational faculty; for this is the only faculty that we have received which examines itself, what it is, and what power it has, and what is the value of this gift, and examines all other faculties: for what else is there which tells us that golden things are beautiful, for they do not say so themselves? Evidently it is the faculty which is capable of judging of appearances. What else judges of music, grammar, and other faculties, proves their uses and points out the occasions for using them? Nothing else.

faculty of using the appearances of things; and if you will take care of this faculty and consider it your only possession, you will never be hindered, never meet with impediments; you will not lament, you will not blame, you will not flatter any person.”

We must make the best use that we can of the things which are in our power, and use the rest according to their nature.

he who desires or avoids the things which are not in his power can neither be faithful nor free, but of necessity he must change with them and be tossed about with them

but because they have produced in the human mind that fruit by which they designed to show us the truth which relates to happiness, shall we not thank God for this?