Theology is the word of God, which is apprehended by pure, humble and spiritually regenerated souls, and not the beautiful words of the mind, which are crafted with literary art and expressed by the legal or worldly spirit. . . .
Theology that is taught like a science usually examines things historically and, consequently, things are understood externally. Since patristic ascesis and inner experience are absent, this kind of theology is full of uncertainty and questions. For with the mind one cannot grasp the Divine Energies if he does not first practice ascesis and live the Divine Energies, that the Grace of God might be energized within him.
Whoever thinks that he can come to know the mysteries of God through external scientific theory, resembles the fool who wants to see Paradise through a telescope.
Those who struggle patristically become empirical theologians through the visitation of the Grace of the Holy Spirit. All those who have an external education, in addition to the internal enlightenment of the soul, may describe the divine mysteries and interpret them correctly, as did many Holy Fathers.
If, however, one does not become spiritually related to the Holy Fathers and wants to take up translating or writing, he will wrong both the Holy Fathers and himself, as well as the people, with his spiritual cloudiness.
Neither is it right for someone to theologize using someone else’s theology, because he will resemble an impotent man who adopts others’ children, presents them as his own and pretends to be the father of a large family. The Holy Fathers took the divine word or personal experiences from their hearts: the result of spiritual battles against evil and the fire of temptations, which they confessed humbly, or, out of love, wrote down in order to help us. . . .
Those who are grateful towards God for everything and constantly attend to themselves humbly and look after God’s creatures and creation with kindness, theologize and thus become the most faithful theologians, even if illiterate. They are like the illiterate shepherds who observe the weather in the countryside, day and night, and become good meteorologists.
—The Orthodox Word , no. 229, pp. 86-88