Final answer:
Augustine seeks to prove his search for truth by exploring the conflict between human freedom and divine knowledge and seeking a resolution through divine grace.
Step-by-step explanation:
Augustine seeks to prove his search for truth due to his belief in the conflict between two rival wills: one that wills good and one that desires sinfulness. Despite the idea of original sin and the fall from grace, Augustine believes that humans have the power to choose the good. However, only divine grace can ultimately resolve this conflict. Augustine's search for truth is driven by his desire to understand how human freedom and divine knowledge can coexist.