Why Pushkin is called the "beginning of all beginnings" in Russian literature

As the Russian national poet, Pushkin, like a dictionary, contains all the treasures, power and flexibility of our language. ...In him, Russian nature, Russian soul, Russian language, and Russian character are reflected as pure and beautiful as the scenery reflected on protruding optical glass.

Belinsky?6?7 pointed out in the famous article "Collected Works of Alexander Pushkin": "Only from Pushkin did Russian literature begin, because in his poetry there is a The pulse of Russian life.