The principle of instructing is such that he who teaches must teach one with a wise heart, godly education is very different from worldly education. Godly education is not for everyone, because wise counsel belongs to those who will use it to become wiser.
The verse shows us that if you instruct a wise man he becomes wiser, when you instruct a righteous man he increases in learning. God knows that those who grow by godly instruction already posses the heart of wisdom.
It is the desire of every grey haired man to impart wisdom to as many people and instruct as many people, however the scripture is very clear wise counsel can not be randomly shared, one ought to seek out the hearts of those he teaches.
Prophetic Declarations
Father we thank you because you made us able to attain unto wise instruction. Amen