Augustine of Hippo in his youth investigated the acquisition of a dogmatic truth. Along the way, he tried to unravel the secrets that surround the world, the sources of wisdom and the complexities of human nature, especially the part that covers subjectivity. Augustinian thought marks a philosophy centered on rationality. The reason is an inner force, the hidden movement that man produces, capable of discerning the learned knowledge. When considering epistemology, the Bishop of Hippo emphasizes two types of knowledge: the sensitive and the intelligible. Sensitive knowledge is acquired by the senses, through the senses men prove the existence of a tangible world. Intelligible knowledge, as far as it is concerned, is called truth or wisdom. This knowledge is understood as ontological knowledge, it is acquired by divine enlightenment in intellectuality. However, for man to achieve this knowledge, self-awareness, faith and the gradual elevation of the soul in seven degrees are necessary: animation, sensation, art, virtue, tranquility, admission and wisdom. Augustine s reflections led him to believe that although the rational being is of a temporal and contingent nature, he receives an enlightenment granted by the inner Master, a timeless being, who teaches men willing to learn. In Augustinianism, God is the only immutable substance, it is not susceptible to accidents, so it is the truth. As the creator of man, God inserted in the human mind sparks of the divine mind, a place where he illuminates, with the unspeakable light, penetrates and propagates undoubted knowledge through a process of interiority. The philosopher identifies the truth embodied in the subjectivity of men. In short, Augustine characterizes wisdom as intellectual and spiritual operations, the highest degree of knowledge.