According to Rudolf Steiner: Ahriman's goal is to isolate every one and every thing on Earth and preserve it for eternity in a state of suspended animation. 

FOOTNOTE: Who is Ahriman: In Zoroastrianism, Ahriman, also known as Angra Mainyu, is the "evil spirit" or "destructive spirit," the main antagonist to the creator god Ahura Mazda. He embodies all that is harmful, chaotic, and destructive, representing the forces that oppose goodness and creation. 

Key aspects of Ahriman:

Adversary to Ahura Mazda:

Ahriman is the ultimate force of evil in Zoroastrian cosmology, constantly battling against the good and benevolent Ahura Mazda. 

Manifestation of Darkness:

Ahriman is often depicted as dwelling in darkness and representing the forces of darkness, in contrast to Ahura Mazda's light. 

Various Interpretations:

While generally understood as a malevolent entity, Ahriman's nature and role have been interpreted differently across various Zoroastrian texts and traditions. For example, some texts suggest he was born from Zurvan's doubts, while others view him as an allegory for the evil thoughts and deeds of humans. 

Influence Beyond Zoroastrianism:

Ahriman's concept has also influenced other belief systems, such as Anthroposophy, where he is associated with materialism and the alienation of humans from their spiritual roots, according to Anthroposophical sources. 

In Warhammer 40k:

In the Warhammer 40,000 universe, Ahriman is a powerful Thousand Sons sorcerer and a disciple of the Chaos God Tzeentch, with goals including reversing the Rubric of Ahriman and acquiring forbidden knowledge

Source of Evil:

He is considered the source of all evil, chaos, and destruction in the world, actively working to undermine Ahura Mazda's creation.