Ptahhotep on the Limits of Skill

Do not be arrogant about your knowledge Nor trust that you are one who knows. Take counsel with the ignorant as with the knowing.

(For) the limits of skill are not reached And no Artisan is equipped with perfection. Beautiful discourse is rarer than Green Stone, Yet it can be found among the servant girls at the grindstones.

Ptahhotep. 6th Dynasty (2300 to 2150 BCE) Egypt. The Instruction of Ptahhotep.