Ibn Rushd presented two arguments against strict believers in doctrinal reasoning. The first argument targeted the notion that rational reasoning is a heresy because it did not exist in the early days of Islam. His argument was that doctrinal reasoning, as well, did not exist then and was only introduced later. Yet it is not considered a heresy. The second argument was based on the Qur'an itself. Should a scholar deduce the inevitability of doctrinal reasoning from God's words "... therefore take heed you who have eyes" (59:[end of] 2) [trans. Arberry], then he/she must deduce the inevitability of rational reasoning. Ibn Rushd explains that it is the scholar's rational faculties that constitute his/her means of doctrinal reasoning. Therefore, the mind is the ultimate tool of knowledge, prepared as it is by God to deduce his presence and to reason in earthly matters as well. This divine qualification renders the human mind continuous in space and time, and open across all nations to a common knowledge. "Therefore," he said, "we must make use of what those who preceded us had said, whether they share our religious beliefs or not," clearly referring to the Greek philosophers.
Presenting the logical proof (the mind is a divine aquisition perfectly qualified for theological inquiry) and the factual proof (scholars of Islam have always looked into the identity of God rationally), Ibn Rushd concludes: "Who forbids the study of ancient books is only deflecting people from the true path to God, called for by Islamic law. This (deflection) is utmost ignorance and remoteness from God." He understood the Qur'anic phrase cited above as a divine order to use rationality to pursue knowledge of all kinds. Any suppression of the mind, therefore, would be a clear violation of this order.
An advocate of intellectual liberty and openness toward other nations' cultures, Ibn Rushd posed a threat to the rigid minds of Caliph Al-Mansour's scholars. The Caliph, who had been close to the philosopher and had welcomed him in his court in Qurtuba as a distinguished scholar, quickly came under pressure from the hard-liners in his court who coerced him with their influence on the public. Soon, Al-Mansour yielded and Ibn Rushd was tried and sentenced to exile in the Jewish village of Alishana. The Caliph then ordered the burning of Inb Rushd's and other philosophers' books except for mathematics, medicine and engineering. Clearly acting without conviction, the Caliph issued an amnesty soon after he returned to Marakesh. Ibn Rushd, on the other hand, stayed away from all provocations until he died in Marakesh in 1198 where he was buried. Three months later, his body was moved to Qurtuba, the tribune of his thought.