The most famous of the Chagatai poets is Mir Ali-Shir Nava'i, who among his other works wrote Muhakamat al-Lughatayn, a detailed comparison of the Chagatai and Persian languages, in which he argued for the superiority of the former.
Completed in December 1499, he believed that the Chagatai Turkic language was superior to Persian for literary purposes, and defended this belief in his work.
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Turks have a word for the beauty mark on a woman's face, but there is no comparable word in Persian.