A man becomes spiritual insofar as he lives a spiritual life. He begins to see God in all things, to see His power and might in every manifestation. Always and everywhere he sees himself abiding in God and dependent on God for all things. But insofar as a man lives a bodily life, so much he does he do bodily things; He doesn't see God in anything, even in the the most wondrous manifestations of His Divine power. In all things he sees body, material, everywhere and always - "God is not before his eyes." (Ps. 35:2)
John of KronstadtIt is necessary for a Christian to fast, in order to clear his mind, to rouse and develop his feelings, and to stimulate his will to useful activity. These three human capabilities we darken and stifle above all by 'surfeiting, and drunkenness, and cares of this life' (Lk. 21:34).
John of KronstadtDivine service, being the high contemplation of the mind, is at the same time, and pre-eminently, the peace, the sweetness and blessedness of the heart.
John of KronstadtWhen you are praying alone, and your spirit is dejected, and you are wearied and oppressed by your loneliness, remember then, as always, that God the Trinity looks upon you with eyes brighter than the sun; also all the angels, your own Guardian Angel, and all the Saints of God.
John of KronstadtHe who is insolent towards men is insolent towards God... Respect in man the grand, inestimable image of God and be forbearing towards the faults and errors of fallen man, so that God may be forbearing towards your own.
John of Kronstadt