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“The King’s Wit was not a silly court fool such as one might find in other kingdoms. He was a sword, a tool maintained by the king. Insulting others was beneath the dignity of the king, so just as one used gloves when forced to handle something vile, the king retained a Wit so he didn’t have to debase himself to the level of rudeness or offensiveness.” — Brandon Sanderson
The King’s Wit was not a silly court fool such as one might find in other kingdoms. He was a sword, a tool maintained by the king. Insulting others was beneath the dignity of the king, so just as one used gloves when forced to handle something vile, the king retained a Wit so he didn’t have to debase himself to the level of rudeness or offensiveness.