St. Symeon The New Theologian

"Apart from love nothing whatever has existed, nor ever will. Its names and actions are many. More numerous still are its distinctive marks; divine and innumerable are its properties. Yet it is one in nature, wholly beyond utterance whether on the part of angels or men or any other creatures, even such as are unknown to us. Reason cannot comprehend it; its glory is inaccessible, its counsels unsearchable. It is eternal because it is beyond time, invisible because thought cannot comprehend it, though it may perceive it."

"Truly, unless one is slaughtered like a sheep for any single virtue and pours out his own blood for it, he will never possess it."

"He who pleads in his defense should not add any [mental reservation] in his heart to what he speaks; he who seeks justice for himself must be dead to the world in the disposition of his heart."

"The Father is light, light the Son, light the Holy Spirit, one light, timeless, invisible, unmingled, eternal, uncreated, without quantity, without lack, invisible, outside and beyond all things, yet which both is and is perceived by the intellect, which no one among men has ever seen before having been purified, nor ever received before having seen it."

"...fasting is the beginning and foundation of every spiritual activity."

"Man is united to God spiritually and physically, since the soul is not separated from the mind, neither the body from the soul. By being united in essence man also has three hypostases by grace. He is a single god by adoption with body and soul and the divine Spirit, of whom he has become a partaker."