The book "
The Person in the Orthodox Tradition" by Metropolitan Hierotheos does an excellent job explaining the relation of theology to philosophy (and the gulf between the two). In it he states:
"It can readily be seen that the god of the philosophers and philosophy is not the God of the Church, that the god of philosophy is an abstract and non-existent god and that the man of philosophy is not the same as the man of the Church. We shall look at this more analytically further on and see for ourselves the opposition of the Holy Fathers to philosophy and the philosophers.....
..
the holy Fathers also rejected the method used by the ancient philosophers, their way of arriving at these conclusions, for it leads to erroneous theories about God, man, and creation. The philosophers philosophized by conjecture, imagination, and having reason at the center, while for the holy the Fathers the nous was the center.
They first purified their hearts of passions, and their nous was illuminated. This illumination of the nous is not just knowledge of the archetypes of beings, but the coming of the grace of God into the heart.
As a result of this, they attained the vision of God, which is seeing God in the uncreated Light. It is in this way that the holy Prophets, Apostles, and saints received the revelation, the manifestation of God in their hearts.
Therefore theology is not related to philosophy, but more akin to medicine.
And indeed we observe that all the heretics through the ages used philosophy, whereas the holy Fathers lived hesychasm. We find this in the whole tradition of the church and in the three Hiearchs, as we shall see in what follows.
They followed another method in order to partake of the uncreated grace of God and attain the real knowledge of God. In medical science there is a cure, and through this a person is brought to health. The same is true in orthodox theology. Man cures his organ for knowing, which is the nous, and in this way he attains health and acquires knowledge of God, which also implies salvation."