From Saint Maximos the Confessor’s Four Hundred Texts on Love:
29. When you are insulted by someone or humiliated, guard against angry thoughts, lest they arouse a feeling of irritation, and so cut you off from love and place you in the realm of hatred.
31. Just as the thought of fire does not warm the body, so faith without love does not actualize the light of spiritual knowledge in the soul.
40. We actively manifest love in forbearance and patience towards our neighbour, in genuinely desiring his good, and in the right use of material things.
42. He who loves God lives the angelic life on earth, fasting and keeping vigils, praying and singing psalms and always thinking good of every man.
49. Do not befoul your intellect by clinging to thoughts filled with anger and sensual desire. Otherwise you will lose your capacity for pure prayer and fall victim to the demon of listlessness.
60. Silence the man who utters slander in your hearing. Otherwise you sin twice over: first, you accustom yourself to this deadly passion and, second you fail to prevent him from gossiping against his neighbour.
80. ‘Learn from Me’, He said, ‘for I am gentle and humble in heart’ (Matt. 11:29). Gentleness keeps the soul’s incensive power in a calm state; humility frees the intellect from conceit and self-esteem.
89. Once the soul starts to feel its own good health, the images in its dreams are also calm and free from passion.
Apolytikion of St. Maximos the Confessor in the Plagal of the Fourth Tone
You are a guide of Orthodoxy, a teacher of piety and modesty, a luminary of the world, the God inspired pride of monastics. O wise Maximos, you have enlightened everyone by your teachings. You are the harp of the Spirit. Intercede to Christ our God for the salvation of our souls.