He who truly wishes to believe in God must be lifted above himself, his mind, and even the whole world. For this reason, the value of faith is considered higher than the value of man. It is even higher than the value of the whole world. Therefore, the reward of faith should be higher than all of man's possessions along with the glories of this world. The reward of faith is God.
Fr. Matthew the Poor
Orthodox Prayer Life: The Interior Way, p. 74, 20th century
What is it that I love when I love you? Not the beauty of a body or the comeliness of time. Nor the luster of the light pleasing to the eyes, nor the sweet melodies of all manner of songs, nor the fragrance of flowers, ointments and spices, not manna and honey, nor limbs welcome to the embrace of the flesh - I do not love these when I love my God. And yet there is a kind of light, a kind of voice, a kind of fragrance, a kind of foods, a kind of embrace, when I love my God, who is the light, voice, fragrance, food, embrace of the inner man, where there shines into the soul that which no place can contain, and there sounds forth that which time cannot end, where there is fragrance which no breeze disperses, taste which eating does not make less, and a clinging together which fulfillment does not terminate. It is this that I love when I love my God.
St. Augustine
Confessions 10.6 in The Confessions of St. Augustine, p. 244, 5th century
Thank God every day with your whole heart for having given to you life according to His image and likeness - an intelligently free and immortal life...Thank Him also for again daily bestowing life upon you, who have fallen an innumerable multitude of times, by your own free will, through sins, from life unto death, and that He does so as soon as you only say from your whole heart: 'Father, I have sinned against heaven and before Thee!' (Luke 15:18).
St. John of Kronstadt
My Life in Christ: Part 1; Holy Trinity Monastery pgs. 104-105, 19th century
For "these many years," saith he "do I serve thee, neither transgressed I thy commandment at any time, and yet thou never gavest me a kid, that I might make merry with my friends; but when this thy son is come who hath devoured thy living with harlots, thou hast killed for him the fatted calf." So great is the power of repentance.
St. John Chrysostom
AN EXHORTATION TO THEODORE AFTER HIS FALL, 4th Century
... but since he repented, and did not despair, he was restored, even after such great corruption, to the same splendour as before, and was arrayed in the most beautiful robe, and enjoyed greater honours than his brother who had not fallen.
St. John Chrysostom
AN EXHORTATION TO THEODORE AFTER HIS FALL, 4th Century
But if he had despaired of his life, and, ... had remained in the foreign land, he would not have obtained what he did obtain, but would have been consumed with hunger, and so have undergone the most pitiable death: ...
St. John Chrysostom
AN EXHORTATION TO THEODORE AFTER HIS FALL, 4th Century