Avicenne says

The educator must be intelligent,a man of religion,…skillful at instructing children ,dignified , calm.far removed from foolishness or pleasantries,not given to levity .neither rigid nor dull ;on the contrary ,he should be kind and understanding ,virtuous,clean and correct .he is one who has served the leaders of the nation,knows the kingly virtues in which they take pride and the correct manners used in society