In this essay we will try to undercover some aspects of freedom and free will of person, which are hidden in the philosophy of St. Augustine of Hippo. As we know, this great philosopher, early Christian theologian, has influenced European Philosophy very much, and a lot of his apposite thesis are present in philosophy even today. Using the phenomenological method of Max Scheler, Karol Wojtyła, and Jean-Luc Marion we will try to present some aspects, discovered and described by Saint Augustin of Hippo, which are necessary for such ideas like subjective Ego.