Exodus 18:17

9. You have sent to me scholars, to whom you wish me to impart what I have not yet learned myself. Teach me, therefore, what I am to teach them; for many urge me vehemently to be a teacher on this subject, and to them I confess that of this, as well as of many other things, I am ignorant, and perhaps, though they maintain a respectful demeanour in my presence, they say among themselves: “Art thou a master in Israel, and knowest not these things?” a rebuke which the Lord gave to one who belonged to the class of men who delighted in being called Rabbi; which was also the reason of his coming by night to the true Teacher, because perchance he, who had been accustomed to teach, blushed to take the learner’s place. But, for my own part, it gives me much more pleasure to hear instruction from another, than to be myself listened to as a teacher. …

The ruler should not relax his care for the things that are within in his occupation among the things that are without, nor neglect to provide for the things that are without in his solicitude for the things that are within; lest either, given up to the things that are without, he fall away from his inmost concerns, or, occupied only with the things that are within bestow not on his neighbours outside himself what he owes them. For it is often the case that some, as if forgetting that they have been put over their brethren for their souls’ sake, devote themselves with the whole effort of their heart to secular concerns; these, when they are at hand, they exult in transacting, and, even when there is a lack of them, pant after them night and day with seethings of turbid thought; and when, haply for lack of opportunity, they have quiet from them, by their very quiet they are wearied all th …