Read often and insatiably the books of the teachers of the Church on divine providence, for they lead the mind to discern the order in God’s creatures and His actions, give it strength, and by their subtleness they prepare it to acquire luminous intuitions and guide it in purity toward understanding of God’s creatures. Read also the Gospels, which God ordained for knowledge for the whole world, that you may find provisions for your journey in the might of God’s providence for every generation, and that your intellect may plunge deeply into wonder at Him. Such reading furthers your aim. Let your reading be done in a stillness which nothing disturbs; be free of all concern for the body and the turmoil of affairs, so that through the sweet understanding which surpasses all the senses you may savor that most sweet taste in your soul which she perceives in herself because of her constant intercourse with these things.
A small affliction borne for God’s sake is better [before God] than a great work performed without tribulation, because affliction willingly borne brings to light the proof of love.
Just as we must beware of overeating, so too we must beware of excessive temperance or abstinence. Excessive temperance weakens the body, destroys wakefulness, coolness and freshness which are indispensable for vigilance, and which fade and weaken when the physical powers succumb and fail. If you force a weak body to labor beyond its powers, you subject your soul to double darkness, and lead it into confusion (and not relief)...
As a man cannot remain unscathed who spares his enemy on the field of battle, so a man engaged in spiritual warfare cannot save his soul if he spares his body.
Love is the Kingdom, which the Lord mystically promised His disciples to eat in His Kingdom. For when we hear Him say, 'You shall eat and drink at the table of My Kingdom,' what do we suppose we shall eat, if not love? Love is sufficient to nourish a man instead of food and drink. This is the wine 'which makes glad the heart of man.' Blessed is he who partakes of this wine! Licentious men have drunk this wine and felt shame; sinners have drunk it and have forgotten the pathways of stumbling; drunkards have drunk this wine and became firm in virtue; the rich have drunk it and desired poverty; the poor have drunk it and been enriched with hope; the sick have drunk it and become strong; the unlearned have taken it and been made wise.
How can one say that a man has attained purity? - When he sees all men as being good, and when none appears to him to be unclean and defiled - then he is indeed pure in heart.
Walk before God in simplicity, and not in subtleties of the mind. Simplicity brings faith; but subtle and intricate speculations bring conceit; and conceit brings withdrawal from God.
Fasting is the champion of every virtue, the beginning of the struggle, the crown of the abstinent, the beauty of virginity and sanctity, the resplendence of chastity, the commencement of the path of Christianity, the mother of prayer, the well-spring of sobriety and prudence, the teacher of stillness, and the precursor of all good works. Just as the enjoyment of light is coupled with healthy eyes, so desire for prayer accompanies fasting that is practiced with discernment.
What salt is for any food, humility is for every virtue. To acquire it, a man must always think of himself with contrition, self-belittlement and painful salf-judgment. But if we acquire it, it will make us sons of God.