Let us have recourse to humility on all occasions; for the humble lie prone on the ground, and how can a man fall if he lies on the ground? But a man who stands on a height can easily fall.
The best medicine for pride, man’s greatest sickness of soul, is humility. Words cannot describe or explain it, but the Fathers say that he who strives hard to live according to the precepts of our Lord, and is fully aware of his own sins, acquires it steadily. Therefore be very careful never to think yourself good, or the least bit better than others.
St. John Climacus was asked if there are reliable signs by which it's possible to know whether a soul is drawing near to God or moving away from Him. After all, regarding ordinary things there are clear signs as to whether they're good or not. When, for instance, cabbage, meat or fish begins to rot, it's easy to notice it, since the rotting object begins to give off a foul odor, the color and taste change, and its external appearance witnesses to its deterioration. Well, and what about the soul? After all, it's bodiless and can't give off a bad smell or change its appearance. To this question the Holy Father replies, 'A sure sign of the deadening of the soul is the avoidance of church services.'
How are we to come to this saving humility, leaving behind us the deadly swelling of arrogance? By exercising ourselves in it in all things, and by keeping in mind that there is nothing which cannot be a danger to us. For the soul becomes like the things it gives itself to; and takes the character and appearance of what it does. Let your demeanor, your dress, your walking, your sitting down, the nature of your food, the quality of your bed, your house and what it contains aim at simplicity. And let your speech, your singing, your manner with your neighbor, let these things also be more in accord with humility than with vanity. In your words let there be no empty pretence, in your singing no excessive sweetness, in conversation be not ponderous or overbearing. In everything refrain from seeking to appear important. Be a help to your friends, kind to the ones who live with you, gentle to your servant, patient with those who are troublesome, loving towards the lowly, comforting to those in trouble, visiting those in affliction, never despising anyone, gracious in friendship, cheerful in answering others, courteous, approachable to everyone, never speaking your own praises, nor getting others to speak them, never taking part in unbecoming conversation, and concealing where you may whatever gifts you possess.
Only to the humble does the Lord reveal Himself in the Holy Spirit, but if we do not humble ourselves we shall not see God. Humility is the light in which we may behold the Light which is God, as the Psalmist sang: 'In Thy light we shall see light.'
When we fervently remember God, we feel divine longing well up within us from the depths of our heart. The evil spirits invade and lurk in the bodily senses, acting through the compliancy of the flesh upon those still immature in soul. According to the Apostle, our intellect always delights in the laws of the Spirit (cf. Rom. 7:22), while the organs of the flesh allow themselves to be seduced by enticing pleasures. Furthermore, in those who are advancing in spiritual knowledge, grace brings an ineffable joy to their body through the perceptive faculty of the intellect. But the demons capture the soul by violence through the bodily senses, especially when they find us faint-hearted in pursuing the spiritual path. They are, indeed, murderers provoking the soul to what it does not want.
Do you see the humility of the saints? How their hearts were moved? Even when God sent them to help other people, they did not agree to this easily out of humility and to avoid glory. Like a man wearing an all-silk garment, if someone throws a dirty rag at him he leaves so as not to ruin his expensive clothes, it is with the saints, who are dressed in virtues, and avoid human glory in order not to be defiled.
Without humility no other virtue is possible, for if man does not fulfill virtue in a spirit of humility, he will inevitably fall into God-opposing pride, and will fall away from God’s mercy.