Just as variety in food stimulates the appetite, so the varied forms of virtue awaken the activity of the intellect. Thus while you travel the path of the mind, repeat again and again the words of the prayer, hold converse with the Lord, cry out ceaselessly, and do not give up, praying frequently and imitating the boldness of the widow who managed to prevail upon the inexorable judge (cf. Luke 18:1-5).
Then you will walk in the path of the Spirit, impervious to sensual desires, the flow of your prayer unbroken by worldly thoughts, and you will become a temple of God, praising Him undistractedly. If you pray in the mind in this way you will be granted the privilege of attaining mindfulness of God and will penetrate the innermost sanctuary of the intellect, mystically contemplating the Invisible and alone celebrating in solitude with God alone in the unity of divine knowledge and in outpourings of love.
~Theoliptos, Metropolitan of Philadelphia