On Guarding the Intellect By Saint Isaiah the Solitary

On Guarding the Intellect

By Saint Isaiah the Solitary

The demons cunningly withdraw for a time in the hope that we will cease to guard our heart, thinking we have now attained peace; then they suddenly attack our unhappy soul and seize it like a sparrow. Gaining possession of it, they drag it down mercilessly into all kinds of sin, worse than those which we have already committed and for which we have asked forgiveness. Let us stand, therefore, with fear of God and keep guard over our heart, practicing the virtues which check the wickedness of our enemies.

Our teacher Jesus Christ, out of pity for mankind and knowing the utter mercilessness of the demons, severely commands us: ‘Be ready at every hour, for you do not know when the thief will come; do not let him come and find you asleep’ (cf. St. Matt. 24:42-43). He also says: ‘Take heed, lest your hearts be overwhelmed with decadence and drunkenness and the cares of this life, and the hour come upon you unawares’ (cf. St. Luke 21:34). Stand guard, then, over your heart and keep a watch on your senses; and if the remembrance of God dwells
peaceably within you, you will catch the thieves when they try to deprive you of it. When a man has an exact knowledge about the nature of thoughts,* he recognizes those which are about to enter and defile him, troubling the intellect with distractions and making it lazy. Those who recognize these evil thoughts for what they are remain undisturbed and continue in prayer to God.

Unless a man hates all the activity of this world, he cannot worship God. What then is meant by the worship of God? It means that we have nothing extraneous in our intellect when we are praying to Him: neither sensual pleasure as we bless Him, nor malice as we sing His praise, nor hatred as we exalt Him, nor jealousy to hinder us as we speak to Him and call Him to mind. For all these things are full of darkness; they are a wall imprisoning our wretched soul, and if the soul has them in itself it cannot worship God with purity. They obstruct its ascent and prevent it from meeting God; they hinder it from blessing Him inwardly and praying to Him with sweetness of heart, and so receiving His illumination. As a result the intellect is always shrouded in darkness and cannot advance in holiness, because it does not make the effort to uproot these thoughts by means of spiritual knowledge.