As early as the mid-third century BC, the Indian emperor Ashoka erected large stone pillars or signboards in Kandahar, Afghanistan, as well as in other cities, on which he displayed edicts on how good behavior or the Buddhists’ dharma could be spread. He counseled his subjects that “piety and self-control [exist] in all philosophical schools. But the most self-possessed are [those people] who are the masters of their tongues. They neither praise themselves nor belittle their fellows in any respect, which is a vain thing to do. … The correct thing is to respect one another and to accept the lessons of each other. Those who do this enlarge their knowledge by sharing what others know.”66
Starr, S. Frederick. Lost Enlightenment: Central Asia's Golden Age from the Arab Conquest to Tamerlane (p. 81). Princeton University Press. Kindle Edition.
Of course the fool is immune to advice.