The sage Any, during Dynasty 18 (circa 1539-1295/1292 B.C.E.), advised students that :

One will do all you say
If you are versed in writings
Study all the writings, put them in your heart,
Then all your words will be effective
Whatever office a scribe is given,
He should consult the writings,
The head of the treasury has not a son,
The master of the seal has no heir
The scribe is chosen for his hand,
His office has no children;
His pronouncements are his freemen
His functions are his masters

Source: "The Instructions of Any," translated by Miriam Lichtheim, in Ancient Egyptian Literature, edited by Lichtheim (Berkeley: University of California Press, 1973), p. 140.