In contemporary Iran, what are the effect of pre-Islamic Persian cultural heritage that are not linked to Islamic culture, religion and literature?
In a previous question, I asked about Zoroastrianism. This question is more general.
Like virtually every other country, Iran values having a culture that is not simply defined by its predominant religion. Iran, therefore, has a close attachment to its pre-Islamic (or better, non-Islamic) civilisation. Besides being a source of pride in its own right, this heritage also serves to differentiate the country and people from its surrounding Turkic and, especially, Arab peoples.
This pride in Persian heritage encompasses several different spheres:
Of course, the Iranian brand of Shi'ism also is something that is something that many Iranians are attached to as something culturally significant and differentiating from most of their neighbours, but it is by no means the only one.
A few more answers: