Also, a man only by the fact that he is searching for the truth is wise because he frees his mind and makes full use of his reason. This is how he enjoys human happiness, and when he dies he can enjoy divine happiness. Finally the last definition found in Book 1 is that wisdom is not only knowledge but the search for knowledge of the human and divine matters that are relevant to be happy.
In my opinion, I do not think that the possession of knowledge nor the pursuit of knowledge is strictly necessary for a happy life. I can see why this was important in Augustine’s time and even in Cicero’s time. Know, we tend to see knowledge as something objective, as books and information that we can obtain if we like it, or