In "Two Dissertations," Saint Philoxenus addresses a critic who, while entangled in heretical beliefs, attempts to refute Philoxenus's writings. The bishop articulates the nature of true faith, emphasizing that it is not based on human works but on divine grace. He critiques the critic's lack of understanding of Christian doctrine and highlights the significance of humility, repentance, and the mysteries of faith. Philoxenus argues that genuine faith transcends intellectual comprehension and is rooted in a relationship with Christ, which should inspire compassion rather than condemnation.