What specifically motivates Faustus to make his satanic compact?

Faustus is motivated to make his satanic compact by a deep dissatisfaction with the limits of traditional forms of knowledge and power. He feels that the study of theology, medicine, and law has failed to provide him with the fulfillment and control he desires over life and death. In his quest for ultimate knowledge and worldly pleasures, he turns to necromancy, believing that a pact with Lucifer will grant him the extraordinary abilities he craves. Ultimately, Faustus's ambition and hubris drive him to forsake his soul in exchange for 24 years of power and knowledge.