Robbins, Leonard.  "Zarathustra and the Magician or, Nietzsche Contra Nietzsche: Some Difficulties in the Concept of the Overman."  Man and World 9, no. 2 (June 1976): 175-95.

Excerpt:

“What torments must Zarathustra have caused his creator, what pricks and

snubs and deep embarrassments ! For surely Nietzsche is no superman, and
he suffers under the weight of his ideal.
In turn, is not Nietzsche himself Zarathustra’s great embarrassment and
chiefest stumbling block ? That one has been created, and is therefore be-
holden to one’s creator, is embarrassment enough. But then, that one’s cre-
ator should lie so far below one…
But is not precisely this the Zarathustrian problem — doubly deduced ?
The deuce ! you say ?”

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