"1. Be not proud because thou art learned; but discourse with the ignorant man as with the sage. For no limit can be set to skill , neither is there any craftsman that possesses full advantages. Fair speech is more rare than the emerald that is found by slave-maidens on the pebbles."
P.42, "The Ethics of Argument " THE INSTRUCTION OF PTAH-HOTEP: THE OLDEST BOOK IN THE WORLD (2016)