Where is Faust's artistic depth?

Faust is a poetic drama as well as a dramatic poem. One of its profound artistic manifestations is that it contains different styles of various poems and dramas at that time. As far as drama is concerned, it is generally a tragedy, but there are also many comedy and even farce scenes; At the same time, it is also a philosophical drama, and many places use the form of religious drama. As far as poetry is concerned, he includes lyrics, epics, satires, folk songs, limerick and so on. In the use of poetic style. It shows that Goethe, as a "great German poet" (in Englishlanguage), is outstanding in poetic art.