Various sites on the Internet claim that the Quran is the most beautiful book written in the Arabic language, e.g. on Blogspot and a chapter from the course Keane World Religions on Course Hero.
The core of my question is: is it that Quran really has the most beautiful Arabic, or is that people defined beauty using the language in the Quran? Can this claim about the Quran be defended on the basis of its literary features?