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There are a lot of books and essays which are written on Persian literature, values and beauties.
Here, in this essay we are going to say that this literature has a constant foundation and some powerful founder. We know that Baihaghi, Nasir khusraw and Balami were the best writher or dabir in their period and they are our literature founders so, our literature has a constant foundation.
The second problem is our prose structure in this period. For example Nasir do not say من صحرایی دیدم عظیم he says من صحرایی عظیم دیدم Now our question is, why we do not say as Nasir has told.