One of the most heavily debated topics of the period was that of faith versus reason. Avicenna and Averroes both leaned more on the side of reason. Augustine stated that he would never allow his philosophical investigations to go beyond the authority of God. Anselm attempted to defend against what he saw as partly an assault on faith, with an approach allowing for both faith and reason. The Augustinian solution to the faith/reason problem is to believe, and then seek to understand.