What is necessary to have peace in soul and body? We must love all men as ourself, and be ready for death at all times.

St. Silouan the Athonite

O Lord and Creator of all, and especially of Your creature, man: You are the God and Father and ruler of Your children; You are the Lord of life and death; You are the guardian and benefactor of our souls.  You fashion and transform all things in their due season through Your creating Word, as You know to be best in Your deep wisdom and providence.  Receive now those who have gone ahead of us in our journey from this life.  Receive us too at the proper time, when You have guided us in our bodily life as long as may be for our profit.  Receive us prepared indeed by fear of You, but not troubled, not shrinking back on that day of death or uprooted by force like those who are lovers of the world and the flesh.  Instead, may we set out eagerly for that everlasting and blessed life which is in Christ Jesus our Lord, to whom be glory forever and ever.  Amen.

St. Gregory the Theologian

In order that you may move your will more easily to this one desire, in everything—to please God and to work for His glory alone—remind yourself often that He has granted you many favors in the past and has shown you His love. He has created you out of nothing in His own likeness and image, and has made all other creatures your servants; He has delivered you from your slavery to the devil, sending down, not one of the angels, but His Only-begotten Son to redeem you, not at the price of corruptible gold and silver, but by His priceless blood and His most painful and degrading death. Having done all this He protects you, every hour and every moment, from your enemies; He fights your battles by His divine grace; in His immaculate Mysteries He prepares the Body and Blood of His beloved Son for your food and protection. All this is a sign of God’s great favor and love for you; a favor so great that it is inconceivable how the great Lord of hosts could grant such favors to our nothingness and worthlessness.

St. Nicodemus of life Holy Mountain

O All-transcendent God (and what other name could describe You?), what words can sing Your praises? No word does You justice. What mind can probe Your secrets? No mind can encompass You. You alone are beyond the power of speech, yet all that we speak stems from You. You alone are beyond the power of thought, yet all that we can conceive springs from You. All things proclaim You, those endowed with reason and those bereft of it. All the expectation and pain of the world coalesces in You. All things utter a prayer to You, a silent hymn composed by You. You sustain everything that exists, and all things move together at Your command. You are the goal of all that exists. You are one and You are all, yet You are none of the things that exist, neither a part nor the whole. You can avail Yourself of any name; how shall I call You, the only unnamable? All-transcendent God!

St. Gregory the Theologian

Where are You pasturing Your flock, O Good Shepherd, who carry the whole flock on Your shoulders? For the whole of human nature is one sheep, and You have lifted it upon Your shoulders. 

Show me the place of peace, lead me to the good pasture that will nourish me, call me by name so that I, Your sheep, may hear Your voice, and by Your speech give me eternal life. Answer me, You whom my soul loves. 

I give You the name “You whom my soul loves” because Your name is above every name and above all understanding, and there is no rational nature that can utter it or comprehend it. Therefore Your name, by which Your goodness is known, is simply the love my soul has for You. How could I not love You, when You loved me so much, even though my heart was black, that You laid down Your life for the sheep of Your flock? A greater love cannot be imagined than exchanging Your life for my salvation. 

Show me then (says my soul) where You pasture Your flock, so that I can find that saving pasture too, and fill myself with the food of heaven without which no one can come to eternal life, and run to the spring and fill myself with the drink of God. You give it, as from a spring, to those who thirst—water pouring from Your side cut open by the lance, water that, to whoever drinks it, is a fountain of water springing up to eternal life. 

If You lead me to pasture here, You will make me lie down at noon, sleeping at peace and taking my rest in light unstained by any shade. For the noon has no shade and the sun stands far above the mountain peaks. You bring Your flock to lie in this light when You bring Your children to rest with You in Your bed. But no one can be judged worthy of this noonday rest who is not a child of light and a child of the day. Whoever has separated himself equally from the shadows of evening and morning, from where evil begins and evil ends, at noon he will lie down and the sun of righteousness will shine on him. 

Show me, then (says my soul), how I should sleep and how I should graze, and where the path is to my noonday rest. Do not let me fall away from Your flock because of ignorance and find myself one of a flock of sheep that are not Yours. 

Thus spoke my soul, when she was anxious about the beauty that God’s care had given her and wanted to know how she could keep this good fortune forever.

St. Gregory of Nyssa

You are Christ, 

my Holy Father, 

my Tender God, 

my Great King, 

my Good Shepherd, 

my Only Master, 

my Best Helper, 

my Most Beautiful and my Beloved, 

my Living Bread, 

my Priest Forever, 

my Country’s Leader, 

my True Light, 

my Holy Sweetness, 

my Straight Path, 

my Supreme Wisdom, 

my Pure Simplicity, 

my Peaceful Harmony, 

my Complete Protection, 

my Good Portion, 

my Everlasting Salvation.

St. Augustine of Hippo

...let us hold fast to love of Him, hating and rightly turning away from the devil. For as our Benefactor is loved and cherished in proportion to His benefactions, so the wicked one should be hated and rejected for his ways in equal proportion. For he is the destroyer of our life. In the words of the Master, he is a murderer from the beginning [John 8:44]. He is the one who has divided our race into ten thousand opinions, wounding it with many darts of sin and seeking to swallow down the inhabited world. If we do not hate him, there will be no escaping the punishment that will be meted out to us, because we joined to our foe and murderer. But, my brothers, let us fly from him! Let us fly most certainly. What is flight? The avoidance of wicked actions and thoughts, and also affinity with God, the assumption of good works.

St. Theodore the Studite

Grumbling is caused by misery and it can be put aside by doxology (giving praise). Grumbling begets grumbling and doxology begets doxology. when someone doesn’t grumble over a problem troubling him, but rather praises God, then the devil gets frustrated and goes off to someone else who grumbles, in order to cause everything to go even worse for him. You see, the more one grumbles, the more one falls into ruin. 

Sometimes the devil deceives us and makes us unable to be pleased with anything; however, one can celebrate all things in a spiritual manner, with doxology, and secure God’s constant blessing.

St. Paisios of Mount Athos

Thou, O Christ, art the Kingdom of Heaven; 

Thou, the land promised to the meet; 

Thou, the meadowland of Paradise; 

Thou, the hall of the celestial banquet; 

Thou, the ineffable bridal chamber; 

Thou, the table set for all; 

Thou, the bread of life; 

Thou, the unheard-of drink; 

Thou, both the urn for the water and the life giving water; 

Thou, moreover, the inextinguishable lamp for each one of the saints; 

Thou, the garment and the crown and the One Who bestoweth the crowns; 

Thou, the joy and rest; 

Thou, the delight and glory; 

Thou, the gladness and mirth; 

And Thy grace, the grace of the Spirit of all sanctity, will shine like the sun in all the saints; 

And Thou, the unapproachable Sun, wilt shine in their midst, and all will shine brightly, according to the measure of their faith, their asceticism, their hope and their love, their purification, and their illumination by Thy Spirit.

St. Symeon the New Theologian

The man who really loves the Lord, who has made a real effort to find the future Kingdom, who is really pained by his sins, who is really mindful of eternal torment and judgment, who really lives in fear of his own departure, will not love, care, or worry about money, or possessions, or parents, or worldly glory, or friends, or brothers, or anything at all on earth.

St. John Climacus

The Christian is one who imitates Christ in thought, word, and deed, as far as is possible for human beings, believing rightly and blamelessly in the Holy Trinity. The lover of God is he who lives in communion with all that is natural and sinless, and as far as he is able neglects nothing good. The continent man is one who lives in the midst of temptations, snares, and turmoil, and who is eager to imitate with all his might those who are free from turmoil.

St. John Climacus

If we want, Christian, to have our heart filled with divine love we must first empty it of the love of this world, its frivolous and sinful customs and then turn our hearts to the one God, our only good and happiness and eternal beatitude.

St Tikhon of Zadonsk

Prayer frees the mind of all thought of the sensory and raises it to God Himself, Who is above all, to converse with Him and daringly ask Him for anything. Thus a man spends his life in purity, as one who, having already experienced communion with God, is thereupon again preparing for this communion.

St. Nilus of Sinai

He who shall preserve the life bestowed upon him, and give thanks to Him Who imparted it, shall receive also length of days forever and ever. But he who shall reject it, and prove himself ungrateful to his Maker, inasmuch as he has been created, and has not recognized Him Who bestowed the gift upon him, deprives himself of the privilege of continuance forever and ever. And, for this reason, the Lord declared to those who showed themselves ungrateful towards Him: ‘If you have not been faithful in that which is little, who will give you that which is great?’ (cf. Lk. 16:11) indicating that those who, in this brief temporal life, have shown themselves ungrateful to Him Who bestowed it, shall justly not receive from Him length of days forever and ever.

St Irenaeus of Lyon

Open, O doors and bolts of my heart, that Christ the King of Glory may enter! 

Enter, O my Light, and enlighten my darkness; 

Enter, O my Life, and resurrect my deadness;

Enter, O my Physician, and heal my wounds; 

Enter, O Divine Fire, and burn up the thorns of my sins; 

Ignite my inward parts and my heart with the flame of Your love; 

Enter, O my King, and destroy in me the kingdom of sin; 

Sit on the throne of my heart and alone reign in me, O Christ, my King and Lord!

St Dimitri of Rostov 

And I, a sinner, have been trying to love God for more than forty years, and cannot say that I perfectly love Him. If we love someone we always remember him and try to please him; day and night our heart is occupied with that object. Is that how you, gentlemen, love God? Do you often turn to Him, do you always remember Him, do you always pray to Him and fulfill His holy commandments? ‘For our good, for our happiness at least let us make a vow that from this day, from this hour, from this minute we shall strive to love God above all else and to fulfill His holy will.'

St. Herman of Alaska

Glory be to Him, Who never felt the need of our praising Him; yet felt the need as being kind to us, and thirsted as loving us, and asks us to give to Him, and longs to give to us. His fruit was mingled with us men, that in Him we might come near to Him, Who condescended to us. By the Fruit of His stem He grafted us into His Tree.

St. Ephraim of Syria

Christians, have we understood the great responsibility that we have taken on before God through baptism?  Have we come to know that we must conduct ourselves as children of God, that we must align our will with the will of God, that we must remain free from sin, that we must love God with all our hearts and always patiently await union with Him?  Have we thought about the fact that our heart should be so filled with love that it should overflow to our neighbor? Do we have the feeling that we must become holy and perfect, children of God and heirs of the Kingdom of Heaven?  We must struggle for this, so that we may not be shown unworthy and rejected.  Let none of us lose our boldness, nor neglect our duties, nor be afraid of the difficulties of spiritual struggle.  For we have God as a helper, who strengthens us in the difficult path of virtue.

St. Nectarios of Aegina 

These eight passions should be destroyed as follows: gluttony by self-control; unchastity by desire for God and longing for the blessings held in store; avarice by compassion for the poor; anger by goodwill and love for all men; worldly dejection by spiritual joy; listlessness by patience, perseverance and offering thanks to God; self-esteem by doing good in secret and by praying constantly with a contrite heart; and pride by not judging or despising anyone in the manner of the boastful Pharisee (cf. Luke 18 : 11–12), and by considering oneself the least of all men. When the intellect has been freed in this way from the passions we have described and been raised up to God, it will henceforth live the life of blessedness, receiving the pledge of the Holy Spirit (cf. 2 Cor. 1 : 22). And when it departs this life, dispassionate and full of true knowledge, it will stand before the light of the Holy Trinity and with the divine angels will shine in glory through all eternity.

St John of Damascus 

Faith and love towards Christ Jesus... are the beginning and the end of life. For the beginning is faith, and the end is love. Now these two, being inseparably connected together, are of God, while all other things which are requisite for a holy life follow after them.

St. Ignatius of Antioch