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Echoes of Heresy

Echoes of Heresy

By: Andy Altschuler
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Echoes of Heresy – a podcast about spiritual dissent, divergent beliefs and doctrinal conflict across time and tradition.

In each episode the host, Andy Altschuler, looks into the stories of heterodox thinkers, movements or systems from various places, epochs and traditions. He also explores doctrinally problematic, controversial or insufficiently defined theological concepts and ritual practices within the mainstream religious frameworks.

From visionary cosmologies and mystical dissidents to folk saints, philosophical provocateurs, and long-buried sects, each episode dives into a story of a particular movement or sect, theological concept or trend, heterodox thinker or strain of thinkers, with references to primary and secondary sources, highlighting curious facts and crucial details.

It’s not strictly academic, but grounded in scholarship. Not esoteric, not sensationalist, not pushing any ideology — just curious, evidence-based exploration of the ways belief resists boundaries, shapes and shakes the world's spiritual traditions.

Echoes of Heresy
Spirituality World
Episodes
  • The Khurramites: Religion, Revolt, and Memory. Part II.
    Nov 16 2025

    Episode number 5 continues the exploration of the story of the Khurramites, a religious movement in Medieval Iran. The movement was nativist in nature, but had features of a syncretic cult. Neither fully Zoroastrian, nor Islamic, however rooted in the long history of Iranic religious traditions.

    In part II, we focus on the Khurramite rebellion against the Abbasid Caliphate, under the leadership of Babak Khorramdin. We delve into the history of the movement after Babak's defeat, including the intricate relations between the Khurramites and the Byzantine Empire, as well as their likely influence on various heterodox currents across the Persianate world.

    We then have a glimpse into how the image of Babak has been used in literature and art of modern Iran and Azerbaijan to shape divergent political and cultural narratives. We also attempt to grasp the role of Babak and the Khurramites in modern Kurdish and Talysh discourses.

    What makes Babak's story so compelling for modern artists and political activists?

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    40 mins
  • The Khurramites: Religion, Revolt, and Memory. Part I.
    Oct 24 2025

    The fall of the Sasanian Empire in the mid-7th century CE marked not just a political upheaval, but a profound transformation of Iranian society. The Islamic conquests introduced new religious paradigms, administrative structures, and social hierarchies. While Islam became the dominant faith, the process of Islamization was neither immediate nor uniform.

    Khurramism was, perhaps, one of the most notable movements in Early Islamic Iran. Neither fully Zoroastrian nor Islamic, they drew from deep wells of Persian religion, folk messianism, and anti-imperial rage.

    The episode no. 4 unfolds in two parts. The first part is focused on the historical context where the movement emerged, available sources about the Khurramites, their belief system and rituals, as well as the personality of their most famous leader - Babak Khorramdin.

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    41 mins
  • Bardesan: Humanist Before Humanism
    Sep 26 2025

    Before Renaissance philosophers proclaimed the ideal of man as free, rational, and divine— the Christian world had already known such a voice.

    Not from Florence or Padua, but from the banks of the Euphrates. Not at the high noon of humanism, but in the first light of Christian civilization.

    Before universities, before scholasticism, before creeds had hardened or canon closed— there, in the second century, lived a man named Bardaisan.

    Philosopher, poet, astrologer, theologian. A polymath...

    In another age, Bardaisan might have been remembered as a sage or a universal historian. It was only the narrowing margins of orthodoxy that cast him instead as a heretic...

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    34 mins
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