Why did Origen believe the material world was created?

According to the theology of Origen, the material world was created by God as a means of discipline for rational beings who had neglected to adore their Creator and subsequently fell.1

Origen posited that these rational beings fell varying distances from their original state; some became angels, others descended into human bodies, and the most wicked became devils. Consequently, the material world serves as a pedagogical environment where natural catastrophes, such as earthquakes and plagues, remind humanity that this realm is not their ultimate destiny. Through this process of discipline, God intends to restore all souls to their original blessedness, as redemption functions as a grand education by providence.1